72302238 has 12 divisors (see below), whose sum is σ = 156654888. Its totient is φ = 24100740.

The previous prime is 72302233. The next prime is 72302257. The reversal of 72302238 is 83220327.

It is a super-2 number, since 2×72302238² = 10455227239617288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72302231) 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, 2008378 + ... + 2008413.

It is an arithmetic number, because the mean of its divisors is an integer number (13054574).

Almost surely, 2^72302238 is an apocalyptic number.

72302238 is an abundant number, since it is smaller than the sum of its proper divisors (84352650).

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

72302238 is a wasteful number, since it uses less digits than its factorization.

72302238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016799 (or 4016796 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 72302238 is about 8503.0722683040. The cubic root of 72302238 is about 416.5980634430.

The spelling of 72302238 in words is "seventy-two million, three hundred two thousand, two hundred thirty-eight".