72786156 has 12 divisors (see below), whose sum is σ = 169834392. Its totient is φ = 24262048.

The previous prime is 72786139. The next prime is 72786157. The reversal of 72786156 is 65168727.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (72786157) 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, 3032745 + ... + 3032768.

It is an arithmetic number, because the mean of its divisors is an integer number (14152866).

Almost surely, 2^72786156 is an apocalyptic number.

It is an amenable number.

72786156 is an abundant number, since it is smaller than the sum of its proper divisors (97048236).

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

72786156 is a wasteful number, since it uses less digits than its factorization.

72786156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065520 (or 6065518 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 72786156 is about 8531.4802935950. The cubic root of 72786156 is about 417.5254261589.

The spelling of 72786156 in words is "seventy-two million, seven hundred eighty-six thousand, one hundred fifty-six".