72641500 has 24 divisors (see below), whose sum is σ = 158650128. Its totient is φ = 29056400.

The previous prime is 72641477. The next prime is 72641509. The reversal of 72641500 is 514627.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72641509) 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, 72142 + ... + 73141.

It is an arithmetic number, because the mean of its divisors is an integer number (6610422).

Almost surely, 2^72641500 is an apocalyptic number.

It is an amenable number.

72641500 is an abundant number, since it is smaller than the sum of its proper divisors (86008628).

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

72641500 is a wasteful number, since it uses less digits than its factorization.

72641500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145302 (or 145290 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 72641500 is about 8522.9982987209. The cubic root of 72641500 is about 417.2486445236.

The spelling of 72641500 in words is "seventy-two million, six hundred forty-one thousand, five hundred".