1156227872 has 18 divisors (see below), whose sum is σ = 2276702379. Its totient is φ = 578017760.

The previous prime is 1156227827. The next prime is 1156227887. The reversal of 1156227872 is 2787226511.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 578113936 + 578113936 = 24044^2 + 24044^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24044.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 189347 + ... + 195357.

Almost surely, 2^1156227872 is an apocalyptic number.

It is an amenable number.

1156227872 is a deficient number, since it is larger than the sum of its proper divisors (1120474507).

1156227872 is an frugal number, since it uses more digits than its factorization.

1156227872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12032 (or 6013 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 1156227872 is about 34003.3508936987. The cubic root of 1156227872 is about 1049.5774178570.

The spelling of 1156227872 in words is "one billion, one hundred fifty-six million, two hundred twenty-seven thousand, eight hundred seventy-two".