189520770 has 32 divisors (see below), whose sum is σ = 455306688. Its totient is φ = 50488128.

The previous prime is 189520741. The next prime is 189520817. The reversal of 189520770 is 77025981.

It is a super-2 number, since 2×189520770² = 71836244522785800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34557 + ... + 39663.

It is an arithmetic number, because the mean of its divisors is an integer number (14228334).

Almost surely, 2^189520770 is an apocalyptic number.

189520770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189520770 is an abundant number, since it is smaller than the sum of its proper divisors (265785918).

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

189520770 is a wasteful number, since it uses less digits than its factorization.

189520770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 189520770 is about 13766.6542776377. The cubic root of 189520770 is about 574.4059599096.

The spelling of 189520770 in words is "one hundred eighty-nine million, five hundred twenty thousand, seven hundred seventy".