187997796 has 36 divisors (see below), whose sum is σ = 543105472. Its totient is φ = 53713584.

The previous prime is 187997783. The next prime is 187997819. The reversal of 187997796 is 697799781.

187997796 is digitally balanced in base 2, 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 super-3 number, since 3×187997796³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372760 + ... + 373263.

Almost surely, 2^187997796 is an apocalyptic number.

It is an amenable number.

187997796 is an abundant number, since it is smaller than the sum of its proper divisors (355107676).

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

187997796 is a wasteful number, since it uses less digits than its factorization.

187997796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746040 (or 746035 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 63.

The square root of 187997796 is about 13711.2288289562. The cubic root of 187997796 is about 572.8631929451.

The spelling of 187997796 in words is "one hundred eighty-seven million, nine hundred ninety-seven thousand, seven hundred ninety-six".