73124428 has 24 divisors (see below), whose sum is σ = 142566480. Its totient is φ = 32585280.

The previous prime is 73124357. The next prime is 73124449. The reversal of 73124428 is 82442137.

It is a self number, because there is not a number n which added to its sum of digits gives 73124428.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22738 + ... + 25753.

It is an arithmetic number, because the mean of its divisors is an integer number (5940270).

Almost surely, 2^73124428 is an apocalyptic number.

It is an amenable number.

73124428 is a deficient number, since it is larger than the sum of its proper divisors (69442052).

73124428 is a wasteful number, since it uses less digits than its factorization.

73124428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48537 (or 48535 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 73124428 is about 8551.2822430323. The cubic root of 73124428 is about 418.1712400200.

The spelling of 73124428 in words is "seventy-three million, one hundred twenty-four thousand, four hundred twenty-eight".