72078965 has 32 divisors (see below), whose sum is σ = 103403520. Its totient is φ = 47202624.

The previous prime is 72078961. The next prime is 72078967. The reversal of 72078965 is 56987027.

It is not a de Polignac number, because 72078965 - 2² = 72078961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72078961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70226 + ... + 71244.

It is an arithmetic number, because the mean of its divisors is an integer number (3231360).

Almost surely, 2^72078965 is an apocalyptic number.

It is an amenable number.

72078965 is a deficient number, since it is larger than the sum of its proper divisors (31324555).

72078965 is a wasteful number, since it uses less digits than its factorization.

72078965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 72078965 is about 8489.9331563918. The cubic root of 72078965 is about 416.1687959140.

The spelling of 72078965 in words is "seventy-two million, seventy-eight thousand, nine hundred sixty-five".