189622020 has 48 divisors (see below), whose sum is σ = 606791808. Its totient is φ = 43342080.

The previous prime is 189621997. The next prime is 189622021. The reversal of 189622020 is 20226981.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (189622021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225321 + ... + 226160.

It is an arithmetic number, because the mean of its divisors is an integer number (12641496).

Almost surely, 2^189622020 is an apocalyptic number.

189622020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189622020 is an abundant number, since it is smaller than the sum of its proper divisors (417169788).

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

189622020 is a wasteful number, since it uses less digits than its factorization.

189622020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451500 (or 451498 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 189622020 is about 13770.3311507022. The cubic root of 189622020 is about 574.5082323406.

The spelling of 189622020 in words is "one hundred eighty-nine million, six hundred twenty-two thousand, twenty".