187921152 has 54 divisors (see below), whose sum is σ = 541829652. Its totient is φ = 62639616.

The previous prime is 187921133. The next prime is 187921157. The reversal of 187921152 is 251129781.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (187921157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38478 + ... + 43085.

Almost surely, 2^187921152 is an apocalyptic number.

187921152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

187921152 is an abundant number, since it is smaller than the sum of its proper divisors (353908500).

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

187921152 is an equidigital number, since it uses as much as digits as its factorization.

187921152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81585 (or 81568 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 187921152 is about 13708.4336085492. The cubic root of 187921152 is about 572.7853329994.

The spelling of 187921152 in words is "one hundred eighty-seven million, nine hundred twenty-one thousand, one hundred fifty-two".