185147028 has 36 divisors (see below), whose sum is σ = 510558048. Its totient is φ = 56105040.

The previous prime is 185147009. The next prime is 185147029. The reversal of 185147028 is 820741581.

185147028 is a `hidden beast` number, since 185 + 1 + 470 + 2 + 8 = 666.

185147028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 185146983 and 185147001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185147029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233376 + ... + 234167.

It is an arithmetic number, because the mean of its divisors is an integer number (14182168).

Almost surely, 2^185147028 is an apocalyptic number.

185147028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

185147028 is an abundant number, since it is smaller than the sum of its proper divisors (325411020).

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

185147028 is a wasteful number, since it uses less digits than its factorization.

185147028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467564 (or 467559 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 185147028 is about 13606.8742920628. The cubic root of 185147028 is about 569.9528308151.

The spelling of 185147028 in words is "one hundred eighty-five million, one hundred forty-seven thousand, twenty-eight".