1156087872 has 42 divisors (see below), whose sum is σ = 3313718798. Its totient is φ = 385362432.

The previous prime is 1156087837. The next prime is 1156087879. The reversal of 1156087872 is 2787806511.

It is a happy number.

1156087872 is a `hidden beast` number, since 1 + 1 + 560 + 8 + 7 + 87 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 769729536 + 386358336 = 27744^2 + 19656^2 .

It is not an unprimeable number, because it can be changed into a prime (1156087879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1002973 + ... + 1004124.

Almost surely, 2^1156087872 is an apocalyptic number.

1156087872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1156087872 is an abundant number, since it is smaller than the sum of its proper divisors (2157630926).

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

1156087872 is a wasteful number, since it uses less digits than its factorization.

1156087872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007115 (or 2007102 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 1156087872 is about 34001.2922107381. The cubic root of 1156087872 is about 1049.5350540136.

The spelling of 1156087872 in words is "one billion, one hundred fifty-six million, eighty-seven thousand, eight hundred seventy-two".