72295218 has 24 divisors (see below), whose sum is σ = 160461756. Its totient is φ = 23510400.

The previous prime is 72295213. The next prime is 72295243. The reversal of 72295218 is 81259227.

It can be written as a sum of positive squares in 2 ways, for example, as 59954049 + 12341169 = 7743^2 + 3513^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72295213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48243 + ... + 49718.

Almost surely, 2^72295218 is an apocalyptic number.

72295218 is an abundant number, since it is smaller than the sum of its proper divisors (88166538).

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

72295218 is a wasteful number, since it uses less digits than its factorization.

72295218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98010 (or 98007 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 72295218 is about 8502.6594663082. The cubic root of 72295218 is about 416.5845801672.

It can be divided in two parts, 7 and 2295218, that added together give a square (2295225 = 1515²).

The spelling of 72295218 in words is "seventy-two million, two hundred ninety-five thousand, two hundred eighteen".