72487916 has 6 divisors (see below), whose sum is σ = 126853860. Its totient is φ = 36243956.

The previous prime is 72487901. The next prime is 72487979. The reversal of 72487916 is 61978427.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9060986 + ... + 9060993.

It is an arithmetic number, because the mean of its divisors is an integer number (21142310).

Almost surely, 2^72487916 is an apocalyptic number.

It is an amenable number.

72487916 is a deficient number, since it is larger than the sum of its proper divisors (54365944).

72487916 is a wasteful number, since it uses less digits than its factorization.

72487916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18121983 (or 18121981 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 72487916 is about 8513.9835564793. The cubic root of 72487916 is about 416.9543777856.

The spelling of 72487916 in words is "seventy-two million, four hundred eighty-seven thousand, nine hundred sixteen".