72250506 has 12 divisors (see below), whose sum is σ = 156542802. Its totient is φ = 24083496.

The previous prime is 72250489. The next prime is 72250517. The reversal of 72250506 is 60505227.

It can be written as a sum of positive squares in only one way, i.e., 54686025 + 17564481 = 7395^2 + 4191^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72250506.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2006941 + ... + 2006976.

Almost surely, 2^72250506 is an apocalyptic number.

72250506 is an abundant number, since it is smaller than the sum of its proper divisors (84292296).

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

72250506 is a wasteful number, since it uses less digits than its factorization.

72250506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013925 (or 4013922 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 72250506 is about 8500.0297646538. The cubic root of 72250506 is about 416.4986815813.

The spelling of 72250506 in words is "seventy-two million, two hundred fifty thousand, five hundred six".