187045420 has 12 divisors (see below), whose sum is σ = 392795424. Its totient is φ = 74818160.

The previous prime is 187045379. The next prime is 187045421. The reversal of 187045420 is 24540781.

It is not an unprimeable number, because it can be changed into a prime (187045421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4676116 + ... + 4676155.

It is an arithmetic number, because the mean of its divisors is an integer number (32732952).

Almost surely, 2^187045420 is an apocalyptic number.

187045420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187045420 is an abundant number, since it is smaller than the sum of its proper divisors (205750004).

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

187045420 is a wasteful number, since it uses less digits than its factorization.

187045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352280 (or 9352278 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 187045420 is about 13676.4549500227. The cubic root of 187045420 is about 571.8942010136.

The spelling of 187045420 in words is "one hundred eighty-seven million, forty-five thousand, four hundred twenty".