72238278 has 32 divisors (see below), whose sum is σ = 165390336. Its totient is φ = 20605248.

The previous prime is 72238267. The next prime is 72238289. The reversal of 72238278 is 87283227.

It is an interprime number because it is at equal distance from previous prime (72238267) and next prime (72238289).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35250 + ... + 37242.

It is an arithmetic number, because the mean of its divisors is an integer number (5168448).

Almost surely, 2^72238278 is an apocalyptic number.

72238278 is an abundant number, since it is smaller than the sum of its proper divisors (93152058).

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

72238278 is a wasteful number, since it uses less digits than its factorization.

72238278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868.

The product of its digits is 75264, while the sum is 39.

The square root of 72238278 is about 8499.3104426183. The cubic root of 72238278 is about 416.4751835534.

The spelling of 72238278 in words is "seventy-two million, two hundred thirty-eight thousand, two hundred seventy-eight".