73890688 has 16 divisors (see below), whose sum is σ = 147204360. Its totient is φ = 36945280.

The previous prime is 73890659. The next prime is 73890709. The reversal of 73890688 is 88609837.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×73890688² = 10919667546226688, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 288508 + ... + 288763.

Almost surely, 2^73890688 is an apocalyptic number.

It is an amenable number.

73890688 is a deficient number, since it is larger than the sum of its proper divisors (73313672).

73890688 is an equidigital number, since it uses as much as digits as its factorization.

73890688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577285 (or 577273 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 73890688 is about 8595.9692879861. The cubic root of 73890688 is about 419.6268189327.

The spelling of 73890688 in words is "seventy-three million, eight hundred ninety thousand, six hundred eighty-eight".