72015706 has 16 divisors (see below), whose sum is σ = 130718016. Its totient is φ = 29048256.

The previous prime is 72015701. The next prime is 72015707. The reversal of 72015706 is 60751027.

It is not an unprimeable number, because it can be changed into a prime (72015701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151056 + ... + 151531.

It is an arithmetic number, because the mean of its divisors is an integer number (8169876).

Almost surely, 2^72015706 is an apocalyptic number.

72015706 is a deficient number, since it is larger than the sum of its proper divisors (58702310).

72015706 is a wasteful number, since it uses less digits than its factorization.

72015706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302613.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 72015706 is about 8486.2068086985. The cubic root of 72015706 is about 416.0470122227.

The spelling of 72015706 in words is "seventy-two million, fifteen thousand, seven hundred six".