1072870156 has 12 divisors (see below), whose sum is σ = 1878681168. Its totient is φ = 536104112.

The previous prime is 1072870151. The next prime is 1072870157. The reversal of 1072870156 is 6510782701.

It is not an unprimeable number, because it can be changed into a prime (1072870151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75376 + ... + 88471.

It is an arithmetic number, because the mean of its divisors is an integer number (156556764).

Almost surely, 2^1072870156 is an apocalyptic number.

It is an amenable number.

1072870156 is a deficient number, since it is larger than the sum of its proper divisors (805811012).

1072870156 is a wasteful number, since it uses less digits than its factorization.

1072870156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165488 (or 165486 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1072870156 is about 32754.6967013893. The cubic root of 1072870156 is about 1023.7228291890.

The spelling of 1072870156 in words is "one billion, seventy-two million, eight hundred seventy thousand, one hundred fifty-six".