73126920 has 32 divisors (see below), whose sum is σ = 219381120. Its totient is φ = 19500480.

The previous prime is 73126897. The next prime is 73126931. The reversal of 73126920 is 2962137.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 304576 + ... + 304815.

It is an arithmetic number, because the mean of its divisors is an integer number (6855660).

Almost surely, 2^73126920 is an apocalyptic number.

It is an amenable number.

73126920 is an abundant number, since it is smaller than the sum of its proper divisors (146254200).

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

73126920 is a wasteful number, since it uses less digits than its factorization.

73126920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609405 (or 609401 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 73126920 is about 8551.4279509331. The cubic root of 73126920 is about 418.1759902378.

The spelling of 73126920 in words is "seventy-three million, one hundred twenty-six thousand, nine hundred twenty".