73904220 has 72 divisors (see below), whose sum is σ = 241428096. Its totient is φ = 18191232.

The previous prime is 73904213. The next prime is 73904231. The reversal of 73904220 is 2240937.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13452 + ... + 18131.

It is an arithmetic number, because the mean of its divisors is an integer number (3353168).

Almost surely, 2^73904220 is an apocalyptic number.

It is an amenable number.

73904220 is an abundant number, since it is smaller than the sum of its proper divisors (167523876).

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

73904220 is a wasteful number, since it uses less digits than its factorization.

73904220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31611 (or 31606 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 73904220 is about 8596.7563650484. The cubic root of 73904220 is about 419.6524335429.

The spelling of 73904220 in words is "seventy-three million, nine hundred four thousand, two hundred twenty".