187864056 has 64 divisors (see below), whose sum is σ = 523987200. Its totient is φ = 62364384.

The previous prime is 187864013. The next prime is 187864081. The reversal of 187864056 is 650468781.

It is a happy number.

It is a super-2 number, since 2×187864056² = 70585807073542272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55155 + ... + 58461.

It is an arithmetic number, because the mean of its divisors is an integer number (8187300).

Almost surely, 2^187864056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187864056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261993600).

187864056 is an abundant number, since it is smaller than the sum of its proper divisors (336123144).

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

187864056 is a wasteful number, since it uses less digits than its factorization.

187864056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585 (or 3575 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 187864056 is about 13706.3509367008. The cubic root of 187864056 is about 572.7273174191.

The spelling of 187864056 in words is "one hundred eighty-seven million, eight hundred sixty-four thousand, fifty-six".