187000089720 has 32 divisors (see below), whose sum is σ = 561000269520. Its totient is φ = 49866690560.

The previous prime is 187000089671. The next prime is 187000089733. The reversal of 187000089720 is 27980000781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779166921 + ... + 779167160.

Almost surely, 2^187000089720 is an apocalyptic number.

187000089720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187000089720 is an abundant number, since it is smaller than the sum of its proper divisors (374000179800).

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

187000089720 is a wasteful number, since it uses less digits than its factorization.

187000089720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558334095 (or 1558334091 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 187000089720 in words is "one hundred eighty-seven billion, eighty-nine thousand, seven hundred twenty".