188922040 has 16 divisors (see below), whose sum is σ = 425074680. Its totient is φ = 75568800.

The previous prime is 188922011. The next prime is 188922067. The reversal of 188922040 is 40229881.

It is a junction number, because it is equal to n+sod(n) for n = 188921987 and 188922005.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2361486 + ... + 2361565.

Almost surely, 2^188922040 is an apocalyptic number.

188922040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188922040 is an abundant number, since it is smaller than the sum of its proper divisors (236152640).

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

188922040 is a wasteful number, since it uses less digits than its factorization.

188922040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723062 (or 4723058 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 188922040 is about 13744.8914146311. The cubic root of 188922040 is about 573.8004380991.

The spelling of 188922040 in words is "one hundred eighty-eight million, nine hundred twenty-two thousand, forty".