190638520 has 32 divisors (see below), whose sum is σ = 439402320. Its totient is φ = 74394880.

The previous prime is 190638491. The next prime is 190638523. The reversal of 190638520 is 25836091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190638523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56482 + ... + 59761.

Almost surely, 2^190638520 is an apocalyptic number.

190638520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190638520 is an abundant number, since it is smaller than the sum of its proper divisors (248763800).

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

190638520 is a wasteful number, since it uses less digits than its factorization.

190638520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116295 (or 116291 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 190638520 is about 13807.1908801175. The cubic root of 190638520 is about 575.5329853278.

The spelling of 190638520 in words is "one hundred ninety million, six hundred thirty-eight thousand, five hundred twenty".