190786464 has 72 divisors (see below), whose sum is σ = 591881472. Its totient is φ = 57813120.

The previous prime is 190786451. The next prime is 190786481. The reversal of 190786464 is 464687091.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26944 + ... + 33279.

It is an arithmetic number, because the mean of its divisors is an integer number (8220576).

Almost surely, 2^190786464 is an apocalyptic number.

It is an amenable number.

190786464 is an abundant number, since it is smaller than the sum of its proper divisors (401095008).

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

190786464 is a wasteful number, since it uses less digits than its factorization.

190786464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60250 (or 60239 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 190786464 is about 13812.5473392854. The cubic root of 190786464 is about 575.6818265932.

The spelling of 190786464 in words is "one hundred ninety million, seven hundred eighty-six thousand, four hundred sixty-four".