Search a number
-
+
23254251420 = 22352513174871
BaseRepresentation
bin10101101010000011…
…111011011110011100
32020000121222100222010
4111222003323132130
5340111042021140
614403255151220
71452155606241
oct255203733634
966017870863
1023254251420
119953467304
12460b975510
13226795c9aa
1411a85935c8
159117d3880
hex56a0fb79c

23254251420 has 96 divisors (see below), whose sum is σ = 65590995456. Its totient is φ = 6155680000.

The previous prime is 23254251341. The next prime is 23254251421. The reversal of 23254251420 is 2415245232.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23254251421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4771585 + ... + 4776455.

It is an arithmetic number, because the mean of its divisors is an integer number (683239536).

Almost surely, 223254251420 is an apocalyptic number.

23254251420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23254251420 is an abundant number, since it is smaller than the sum of its proper divisors (42336744036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23254251420 is a wasteful number, since it uses less digits than its factorization.

23254251420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 23254251420 its reverse (2415245232), we get a palindrome (25669496652).

The spelling of 23254251420 in words is "twenty-three billion, two hundred fifty-four million, two hundred fifty-one thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 251 317 502 634 753 951 1004 1255 1268 1506 1585 1902 2510 3012 3170 3765 3804 4755 4871 5020 6340 7530 9510 9742 14613 15060 19020 19484 24355 29226 48710 58452 73065 79567 97420 146130 159134 238701 292260 318268 397835 477402 795670 954804 1193505 1222621 1544107 1591340 2387010 2445242 3088214 3667863 4632321 4774020 4890484 6113105 6176428 7335726 7720535 9264642 12226210 14671452 15441070 18339315 18529284 23161605 24452420 30882140 36678630 46323210 73357260 92646420 387570857 775141714 1162712571 1550283428 1937854285 2325425142 3875708570 4650850284 5813562855 7751417140 11627125710 23254251420