73420164 has 36 divisors (see below), whose sum is σ = 186407676. Its totient is φ = 24365568.

The previous prime is 73420147. The next prime is 73420169. The reversal of 73420164 is 46102437.

It can be written as a sum of positive squares in 2 ways, for example, as 40449600 + 32970564 = 6360^2 + 5742^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (73420169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4012 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (5177991).

Almost surely, 2^73420164 is an apocalyptic number.

It is an amenable number.

73420164 is an abundant number, since it is smaller than the sum of its proper divisors (112987512).

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

73420164 is a wasteful number, since it uses less digits than its factorization.

73420164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996 (or 8991 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 73420164 is about 8568.5567046032. The cubic root of 73420164 is about 418.7342162611.

The spelling of 73420164 in words is "seventy-three million, four hundred twenty thousand, one hundred sixty-four".