188009472 has 132 divisors (see below), whose sum is σ = 583395000. Its totient is φ = 53673984.

The previous prime is 188009461. The next prime is 188009473. The reversal of 188009472 is 274900881.

It is a self number, because there is not a number n which added to its sum of digits gives 188009472.

It is not an unprimeable number, because it can be changed into a prime (188009473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149904 + ... + 151152.

Almost surely, 2^188009472 is an apocalyptic number.

188009472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188009472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291697500).

188009472 is an abundant number, since it is smaller than the sum of its proper divisors (395385528).

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

188009472 is a wasteful number, since it uses less digits than its factorization.

188009472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 188009472 is about 13711.6546047514. The cubic root of 188009472 is about 572.8750523256.

The spelling of 188009472 in words is "one hundred eighty-eight million, nine thousand, four hundred seventy-two".