72206508 has 54 divisors (see below), whose sum is σ = 186024972. Its totient is φ = 21782640.

The previous prime is 72206507. The next prime is 72206513. The reversal of 72206508 is 80560227.

It is not an unprimeable number, because it can be changed into a prime (72206507) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 323685 + ... + 323907.

Almost surely, 2^72206508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72206508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93012486).

72206508 is an abundant number, since it is smaller than the sum of its proper divisors (113818464).

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

72206508 is a wasteful number, since it uses less digits than its factorization.

72206508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 72206508 is about 8497.4412619329. The cubic root of 72206508 is about 416.4141200973.

The spelling of 72206508 in words is "seventy-two million, two hundred six thousand, five hundred eight".