188971420 has 24 divisors (see below), whose sum is σ = 432916848. Its totient is φ = 68716800.

The previous prime is 188971411. The next prime is 188971441. The reversal of 188971420 is 24179881.

It is a happy number.

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, 429261 + ... + 429700.

It is an arithmetic number, because the mean of its divisors is an integer number (18038202).

Almost surely, 2^188971420 is an apocalyptic number.

188971420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188971420 is an abundant number, since it is smaller than the sum of its proper divisors (243945428).

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

188971420 is a wasteful number, since it uses less digits than its factorization.

188971420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858981 (or 858979 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 188971420 is about 13746.6876010187. The cubic root of 188971420 is about 573.8504266152.

The spelling of 188971420 in words is "one hundred eighty-eight million, nine hundred seventy-one thousand, four hundred twenty".