73078520 has 32 divisors (see below), whose sum is σ = 167533920. Its totient is φ = 28679040.

The previous prime is 73078517. The next prime is 73078553. The reversal of 73078520 is 2587037.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15116 + ... + 19355.

It is an arithmetic number, because the mean of its divisors is an integer number (5235435).

Almost surely, 2^73078520 is an apocalyptic number.

It is an amenable number.

73078520 is an abundant number, since it is smaller than the sum of its proper divisors (94455400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73078520 is a wasteful number, since it uses less digits than its factorization.

73078520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34535 (or 34531 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 73078520 is about 8548.5975457966. The cubic root of 73078520 is about 418.0837114761.

The spelling of 73078520 in words is "seventy-three million, seventy-eight thousand, five hundred twenty".