Search a number
-
+
1790468820 = 2233572157431
BaseRepresentation
bin110101010111000…
…0110001011010100
311121210002020111000
41222232012023110
512131330000240
6453355543300
762240506500
oct15256061324
94553066430
101790468820
118397447a8
1241b75ab30
13226c33a0a
1412db15300
15a72c4430
hex6ab862d4

1790468820 has 288 divisors, whose sum is σ = 6536194560. Its totient is φ = 405699840.

The previous prime is 1790468761. The next prime is 1790468821. The reversal of 1790468820 is 288640971.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1790468821) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4154005 + ... + 4154435.

It is an arithmetic number, because the mean of its divisors is an integer number (22695120).

Almost surely, 21790468820 is an apocalyptic number.

1790468820 is a gapful number since it is divisible by the number (10) 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 1790468820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3268097280).

1790468820 is an abundant number, since it is smaller than the sum of its proper divisors (4745725740).

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

1790468820 is a wasteful number, since it uses less digits than its factorization.

1790468820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1790468820 is about 42313.9317483025. The cubic root of 1790468820 is about 1214.2895404460.

The spelling of 1790468820 in words is "one billion, seven hundred ninety million, four hundred sixty-eight thousand, eight hundred twenty".