72375771 has 32 divisors (see below), whose sum is σ = 106624000. Its totient is φ = 43658784.

The previous prime is 72375739. The next prime is 72375773. The reversal of 72375771 is 17757327.

It is not a de Polignac number, because 72375771 - 2⁵ = 72375739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72375773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520620 + ... + 520758.

It is an arithmetic number, because the mean of its divisors is an integer number (3332000).

Almost surely, 2^72375771 is an apocalyptic number.

72375771 is a deficient number, since it is larger than the sum of its proper divisors (34248229).

72375771 is a wasteful number, since it uses less digits than its factorization.

72375771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 234 counting only the distinct ones).

The product of its digits is 72030, while the sum is 39.

The square root of 72375771 is about 8507.3950772255. The cubic root of 72375771 is about 416.7392454546.

The spelling of 72375771 in words is "seventy-two million, three hundred seventy-five thousand, seven hundred seventy-one".