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23049460 = 2257612699
BaseRepresentation
bin101011111101…
…1010011110100
31121101000220201
41113323103310
521400040320
62142010244
7366626410
oct127732364
947330821
1023049460
1112013445
127876984
134a10445
1430bdd40
15205470a
hex15fb4f4

23049460 has 48 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 7770240.

The previous prime is 23049437. The next prime is 23049463. The reversal of 23049460 is 6494032.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23049463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7191 + ... + 9889.

It is an arithmetic number, because the mean of its divisors is an integer number (1171800).

Almost surely, 223049460 is an apocalyptic number.

23049460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23049460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28123200).

23049460 is an abundant number, since it is smaller than the sum of its proper divisors (33196940).

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

23049460 is a wasteful number, since it uses less digits than its factorization.

23049460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 23049460 is about 4800.9853155368. The cubic root of 23049460 is about 284.5904037186.

The spelling of 23049460 in words is "twenty-three million, forty-nine thousand, four hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 61 70 122 140 244 305 427 610 854 1220 1708 2135 2699 4270 5398 8540 10796 13495 18893 26990 37786 53980 75572 94465 164639 188930 329278 377860 658556 823195 1152473 1646390 2304946 3292780 4609892 5762365 11524730 23049460