190791620 has 12 divisors (see below), whose sum is σ = 400662444. Its totient is φ = 76316640.

The previous prime is 190791613. The next prime is 190791649. The reversal of 190791620 is 26197091.

It can be written as a sum of positive squares in 2 ways, for example, as 96157636 + 94633984 = 9806^2 + 9728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4769771 + ... + 4769810.

It is an arithmetic number, because the mean of its divisors is an integer number (33388537).

Almost surely, 2^190791620 is an apocalyptic number.

190791620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190791620 is an abundant number, since it is smaller than the sum of its proper divisors (209870824).

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

190791620 is a wasteful number, since it uses less digits than its factorization.

190791620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9539590 (or 9539588 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 190791620 is about 13812.7339799187. The cubic root of 190791620 is about 575.6870124760.

The spelling of 190791620 in words is "one hundred ninety million, seven hundred ninety-one thousand, six hundred twenty".