190857984 has 72 divisors (see below), whose sum is σ = 511138992. Its totient is φ = 63221760.

The previous prime is 190857943. The next prime is 190858007. The reversal of 190857984 is 489758091.

190857984 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138322 + ... + 139694.

Almost surely, 2^190857984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190857984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255569496).

190857984 is an abundant number, since it is smaller than the sum of its proper divisors (320281008).

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

190857984 is a wasteful number, since it uses less digits than its factorization.

190857984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1559 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 190857984 is about 13815.1360471043. The cubic root of 190857984 is about 575.7537527659.

The spelling of 190857984 in words is "one hundred ninety million, eight hundred fifty-seven thousand, nine hundred eighty-four".