72431601 has 8 divisors (see below), whose sum is σ = 105355104. Its totient is φ = 43897920.

The previous prime is 72431587. The next prime is 72431609. The reversal of 72431601 is 10613427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72431601 - 2⁶ = 72431537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72431609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097416 + ... + 1097481.

It is an arithmetic number, because the mean of its divisors is an integer number (13169388).

Almost surely, 2^72431601 is an apocalyptic number.

It is an amenable number.

72431601 is a deficient number, since it is larger than the sum of its proper divisors (32923503).

72431601 is a wasteful number, since it uses less digits than its factorization.

72431601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194911.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 72431601 is about 8510.6757076040. The cubic root of 72431601 is about 416.8463741791.

The spelling of 72431601 in words is "seventy-two million, four hundred thirty-one thousand, six hundred one".