189648520 has 32 divisors (see below), whose sum is σ = 427115520. Its totient is φ = 75787200.

The previous prime is 189648517. The next prime is 189648527. The reversal of 189648520 is 25846981.

It is a happy number.

189648520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189648520² = 71933122276380800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (189648527) 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, 65095 + ... + 67945.

It is an arithmetic number, because the mean of its divisors is an integer number (13347360).

Almost surely, 2^189648520 is an apocalyptic number.

189648520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189648520 is an abundant number, since it is smaller than the sum of its proper divisors (237467000).

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

189648520 is a wasteful number, since it uses less digits than its factorization.

189648520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525 (or 4521 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 189648520 is about 13771.2933306934. The cubic root of 189648520 is about 574.5349939284.

The spelling of 189648520 in words is "one hundred eighty-nine million, six hundred forty-eight thousand, five hundred twenty".