72207506 has 32 divisors (see below), whose sum is σ = 128701440. Its totient is φ = 29727936.

The previous prime is 72207481. The next prime is 72207523. The reversal of 72207506 is 60570227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118655 + ... + 119261.

It is an arithmetic number, because the mean of its divisors is an integer number (4021920).

Almost surely, 2^72207506 is an apocalyptic number.

It is a pronic number, being equal to 8497×8498.

72207506 is a deficient number, since it is larger than the sum of its proper divisors (56493934).

72207506 is a wasteful number, since it uses less digits than its factorization.

72207506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72207506 is about 8497.4999852898. The cubic root of 72207506 is about 416.4160385733.

The spelling of 72207506 in words is "seventy-two million, two hundred seven thousand, five hundred six".