73428028 has 12 divisors (see below), whose sum is σ = 128703400. Its totient is φ = 36655632.

The previous prime is 73428023. The next prime is 73428059. The reversal of 73428028 is 82082437.

It is a junction number, because it is equal to n+sod(n) for n = 73427984 and 73428002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73428023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11703 + ... + 16846.

Almost surely, 2^73428028 is an apocalyptic number.

It is an amenable number.

73428028 is a deficient number, since it is larger than the sum of its proper divisors (55275372).

73428028 is a wasteful number, since it uses less digits than its factorization.

73428028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29196 (or 29194 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 73428028 is about 8569.0155794000. The cubic root of 73428028 is about 418.7491658705.

The spelling of 73428028 in words is "seventy-three million, four hundred twenty-eight thousand, twenty-eight".