72131454 has 24 divisors (see below), whose sum is σ = 156444912. Its totient is φ = 24019200.

The previous prime is 72131443. The next prime is 72131461. The reversal of 72131454 is 45413127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27567 + ... + 30069.

It is an arithmetic number, because the mean of its divisors is an integer number (6518538).

Almost surely, 2^72131454 is an apocalyptic number.

72131454 is an abundant number, since it is smaller than the sum of its proper divisors (84313458).

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

72131454 is a wasteful number, since it uses less digits than its factorization.

72131454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112 (or 4109 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 72131454 is about 8493.0238431315. The cubic root of 72131454 is about 416.2697915541.

The spelling of 72131454 in words is "seventy-two million, one hundred thirty-one thousand, four hundred fifty-four".