73489320 has 48 divisors (see below), whose sum is σ = 238841460. Its totient is φ = 19597056.

The previous prime is 73489271. The next prime is 73489327. The reversal of 73489320 is 2398437.

It can be written as a sum of positive squares in 2 ways, for example, as 73307844 + 181476 = 8562^2 + 426^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (73489327) 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, 101709 + ... + 102428.

Almost surely, 2^73489320 is an apocalyptic number.

It is an amenable number.

73489320 is an abundant number, since it is smaller than the sum of its proper divisors (165352140).

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

73489320 is a wasteful number, since it uses less digits than its factorization.

73489320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204154 (or 204147 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 73489320 is about 8572.5912068639. The cubic root of 73489320 is about 418.8656465322.

The spelling of 73489320 in words is "seventy-three million, four hundred eighty-nine thousand, three hundred twenty".