186040028 has 12 divisors (see below), whose sum is σ = 326409720. Its totient is φ = 92780112.

The previous prime is 186040013. The next prime is 186040069. The reversal of 186040028 is 820040681.

It is a super-2 number, since 2×186040028² = 69221784036481568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58226 + ... + 61337.

It is an arithmetic number, because the mean of its divisors is an integer number (27200810).

Almost surely, 2^186040028 is an apocalyptic number.

It is an amenable number.

186040028 is a deficient number, since it is larger than the sum of its proper divisors (140369692).

186040028 is a wasteful number, since it uses less digits than its factorization.

186040028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119956 (or 119954 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 186040028 is about 13639.6491157214. The cubic root of 186040028 is about 570.8676925252.

The spelling of 186040028 in words is "one hundred eighty-six million, forty thousand, twenty-eight".