73473128 has 16 divisors (see below), whose sum is σ = 138209760. Its totient is φ = 36617200.

The previous prime is 73473091. The next prime is 73473137. The reversal of 73473128 is 82137437.

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, 12278 + ... + 17253.

It is an arithmetic number, because the mean of its divisors is an integer number (8638110).

Almost surely, 2^73473128 is an apocalyptic number.

It is an amenable number.

73473128 is a deficient number, since it is larger than the sum of its proper divisors (64736632).

73473128 is a wasteful number, since it uses less digits than its factorization.

73473128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29848 (or 29844 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 73473128 is about 8571.6467496042. The cubic root of 73473128 is about 418.8348811968.

The spelling of 73473128 in words is "seventy-three million, four hundred seventy-three thousand, one hundred twenty-eight".