187500972 has 12 divisors (see below), whose sum is σ = 437502296. Its totient is φ = 62500320.

The previous prime is 187500961. The next prime is 187501009. The reversal of 187500972 is 279005781.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×187500972² = 70313229001889568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 187500972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7812529 + ... + 7812552.

Almost surely, 2^187500972 is an apocalyptic number.

187500972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

187500972 is an abundant number, since it is smaller than the sum of its proper divisors (250001324).

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

187500972 is a wasteful number, since it uses less digits than its factorization.

187500972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15625088 (or 15625086 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 187500972 is about 13693.0994300049. The cubic root of 187500972 is about 572.3581103081.

It can be divided in two parts, 187500 and 972, that multiplied together give a square (182250000 = 13500²).

The spelling of 187500972 in words is "one hundred eighty-seven million, five hundred thousand, nine hundred seventy-two".