1156972032 has 160 divisors (see below), whose sum is σ = 3456921600. Its totient is φ = 382040064.

The previous prime is 1156972031. The next prime is 1156972039. The reversal of 1156972032 is 2302796511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156972031) 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, 1755319 + ... + 1755977.

It is an arithmetic number, because the mean of its divisors is an integer number (21605760).

Almost surely, 2^1156972032 is an apocalyptic number.

1156972032 is a gapful number since it is divisible by the number (12) 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 1156972032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728460800).

1156972032 is an abundant number, since it is smaller than the sum of its proper divisors (2299949568).

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

1156972032 is an equidigital number, since it uses as much as digits as its factorization.

1156972032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1156972032 is about 34014.2915845678. The cubic root of 1156972032 is about 1049.8025424613.

The spelling of 1156972032 in words is "one billion, one hundred fifty-six million, nine hundred seventy-two thousand, thirty-two".