72151508 has 72 divisors (see below), whose sum is σ = 154457856. Its totient is φ = 29203200.

The previous prime is 72151501. The next prime is 72151523. The reversal of 72151508 is 80515127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72151501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230360 + ... + 230672.

It is an arithmetic number, because the mean of its divisors is an integer number (2145248).

Almost surely, 2^72151508 is an apocalyptic number.

It is an amenable number.

72151508 is an abundant number, since it is smaller than the sum of its proper divisors (82306348).

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

72151508 is a wasteful number, since it uses less digits than its factorization.

72151508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 72151508 is about 8494.2043771032. The cubic root of 72151508 is about 416.3083651141.

The spelling of 72151508 in words is "seventy-two million, one hundred fifty-one thousand, five hundred eight".