72292250 has 16 divisors (see below), whose sum is σ = 135331560. Its totient is φ = 28916800.

The previous prime is 72292201. The next prime is 72292277. The reversal of 72292250 is 5229227.

It can be written as a sum of positive squares in 4 ways, for example, as 30547729 + 41744521 = 5527^2 + 6461^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144335 + ... + 144834.

Almost surely, 2^72292250 is an apocalyptic number.

72292250 is a deficient number, since it is larger than the sum of its proper divisors (63039310).

72292250 is a wasteful number, since it uses less digits than its factorization.

72292250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289186 (or 289176 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 72292250 is about 8502.4849308893. The cubic root of 72292250 is about 416.5788792832.

The spelling of 72292250 in words is "seventy-two million, two hundred ninety-two thousand, two hundred fifty".