72481872 has 20 divisors (see below), whose sum is σ = 187244960. Its totient is φ = 24160608.

The previous prime is 72481831. The next prime is 72481883. The reversal of 72481872 is 27818427.

It is a self number, because there is not a number n which added to its sum of digits gives 72481872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754972 + ... + 755067.

It is an arithmetic number, because the mean of its divisors is an integer number (9362248).

Almost surely, 2^72481872 is an apocalyptic number.

It is an amenable number.

72481872 is an abundant number, since it is smaller than the sum of its proper divisors (114763088).

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

72481872 is a wasteful number, since it uses less digits than its factorization.

72481872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510050 (or 1510044 counting only the distinct ones).

The product of its digits is 50176, while the sum is 39.

The square root of 72481872 is about 8513.6286035979. The cubic root of 72481872 is about 416.9427889929.

The spelling of 72481872 in words is "seventy-two million, four hundred eighty-one thousand, eight hundred seventy-two".