1156624920 has 640 divisors, whose sum is σ = 4742115840. Its totient is φ = 249384960.

The previous prime is 1156624871. The next prime is 1156624979. The reversal of 1156624920 is 294266511.

1156624920 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 624 + 9 + 20 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 13935199 + ... + 13935281.

It is an arithmetic number, because the mean of its divisors is an integer number (7409556).

Almost surely, 2^1156624920 is an apocalyptic number.

1156624920 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 1156624920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2371057920).

1156624920 is an abundant number, since it is smaller than the sum of its proper divisors (3585490920).

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

1156624920 is a wasteful number, since it uses less digits than its factorization.

1156624920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1156624920 is about 34009.1887583341. The cubic root of 1156624920 is about 1049.6975455389.

The spelling of 1156624920 in words is "one billion, one hundred fifty-six million, six hundred twenty-four thousand, nine hundred twenty".