186990120 has 80 divisors (see below), whose sum is σ = 628505460. Its totient is φ = 49863168.

The previous prime is 186990103. The next prime is 186990137. The reversal of 186990120 is 21099681.

It is an interprime number because it is at equal distance from previous prime (186990103) and next prime (186990137).

It can be written as a sum of positive squares in 2 ways, for example, as 181764324 + 5225796 = 13482^2 + 2286^2 .

It is a super-2 number, since 2×186990120² = 69930609955228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 19 ways as a sum of consecutive naturals, for example, 25617 + ... + 32096.

Almost surely, 2^186990120 is an apocalyptic number.

186990120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

186990120 is an abundant number, since it is smaller than the sum of its proper divisors (441515340).

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

186990120 is a wasteful number, since it uses less digits than its factorization.

186990120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57736 (or 57723 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 186990120 is about 13674.4330778281. The cubic root of 186990120 is about 571.8378352629.

The spelling of 186990120 in words is "one hundred eighty-six million, nine hundred ninety thousand, one hundred twenty".