188420472 has 32 divisors (see below), whose sum is σ = 523390800. Its totient is φ = 62806752.

The previous prime is 188420471. The next prime is 188420579. The reversal of 188420472 is 274024881.

188420472 is a `hidden beast` number, since 188 + 4 + 2 + 0 + 472 = 666.

188420472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188420471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435943 + ... + 436374.

Almost surely, 2^188420472 is an apocalyptic number.

188420472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

188420472 is an abundant number, since it is smaller than the sum of its proper divisors (334970328).

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

188420472 is a wasteful number, since it uses less digits than its factorization.

188420472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872332 (or 872322 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 188420472 is about 13726.6336732645. The cubic root of 188420472 is about 573.2921949330.

The spelling of 188420472 in words is "one hundred eighty-eight million, four hundred twenty thousand, four hundred seventy-two".