73539428 has 12 divisors (see below), whose sum is σ = 129514812. Its totient is φ = 36535200.

The previous prime is 73539419. The next prime is 73539437. The reversal of 73539428 is 82493537.

It is an interprime number because it is at equal distance from previous prime (73539419) and next prime (73539437).

It can be written as a sum of positive squares in 2 ways, for example, as 12730624 + 60808804 = 3568^2 + 7798^2 .

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, 57923 + ... + 59178.

It is an arithmetic number, because the mean of its divisors is an integer number (10792901).

Almost surely, 2^73539428 is an apocalyptic number.

It is an amenable number.

73539428 is a deficient number, since it is larger than the sum of its proper divisors (55975384).

73539428 is a wasteful number, since it uses less digits than its factorization.

73539428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117262 (or 117260 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 73539428 is about 8575.5132790988. The cubic root of 73539428 is about 418.9608247674.

The spelling of 73539428 in words is "seventy-three million, five hundred thirty-nine thousand, four hundred twenty-eight".