73125428 has 12 divisors (see below), whose sum is σ = 128328480. Its totient is φ = 36460152.

The previous prime is 73125421. The next prime is 73125461. The reversal of 73125428 is 82452137.

It is a junction number, because it is equal to n+sod(n) for n = 73125394 and 73125403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73125421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24026 + ... + 26897.

It is an arithmetic number, because the mean of its divisors is an integer number (10694040).

Almost surely, 2^73125428 is an apocalyptic number.

It is an amenable number.

73125428 is a deficient number, since it is larger than the sum of its proper divisors (55203052).

73125428 is a wasteful number, since it uses less digits than its factorization.

73125428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51286 (or 51284 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 73125428 is about 8551.3407135957. The cubic root of 73125428 is about 418.1731462199.

The spelling of 73125428 in words is "seventy-three million, one hundred twenty-five thousand, four hundred twenty-eight".