72263187 has 6 divisors (see below), whose sum is σ = 104380172. Its totient is φ = 48175452.

The previous prime is 72263179. The next prime is 72263189. The reversal of 72263187 is 78136227.

It is not a de Polignac number, because 72263187 - 2³ = 72263179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72263189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4014613 + ... + 4014630.

Almost surely, 2^72263187 is an apocalyptic number.

72263187 is a deficient number, since it is larger than the sum of its proper divisors (32116985).

72263187 is a wasteful number, since it uses less digits than its factorization.

72263187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8029249 (or 8029246 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 72263187 is about 8500.7756704903. The cubic root of 72263187 is about 416.5230473198.

The spelling of 72263187 in words is "seventy-two million, two hundred sixty-three thousand, one hundred eighty-seven".