189457704 has 80 divisors (see below), whose sum is σ = 539468820. Its totient is φ = 62104320.

The previous prime is 189457657. The next prime is 189457727. The reversal of 189457704 is 407754981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 187635204 + 1822500 = 13698^2 + 1350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189457704.

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 19 ways as a sum of consecutive naturals, for example, 37132 + ... + 41924.

Almost surely, 2^189457704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189457704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269734410).

189457704 is an abundant number, since it is smaller than the sum of its proper divisors (350011116).

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

189457704 is a wasteful number, since it uses less digits than its factorization.

189457704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872 (or 4859 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 189457704 is about 13764.3635523042. The cubic root of 189457704 is about 574.3422386524.

The spelling of 189457704 in words is "one hundred eighty-nine million, four hundred fifty-seven thousand, seven hundred four".