188807140 has 24 divisors (see below), whose sum is σ = 396990720. Its totient is φ = 75428448.

The previous prime is 188807119. The next prime is 188807141. The reversal of 188807140 is 41708881.

It is a super-2 number, since 2×188807140² = 71296272229959200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 188807140.

It is not an unprimeable number, because it can be changed into a prime (188807141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11791 + ... + 22729.

It is an arithmetic number, because the mean of its divisors is an integer number (16541280).

Almost surely, 2^188807140 is an apocalyptic number.

188807140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188807140 is an abundant number, since it is smaller than the sum of its proper divisors (208183580).

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

188807140 is a wasteful number, since it uses less digits than its factorization.

188807140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11811 (or 11809 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 188807140 is about 13740.7110441927. The cubic root of 188807140 is about 573.6840884473.

The spelling of 188807140 in words is "one hundred eighty-eight million, eight hundred seven thousand, one hundred forty".