189640024 has 32 divisors (see below), whose sum is σ = 410407200. Its totient is φ = 80467200.

The previous prime is 189639973. The next prime is 189640027. The reversal of 189640024 is 420046981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189640027) 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, 11109 + ... + 22420.

It is an arithmetic number, because the mean of its divisors is an integer number (12825225).

Almost surely, 2^189640024 is an apocalyptic number.

189640024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189640024 is an abundant number, since it is smaller than the sum of its proper divisors (220767176).

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

189640024 is a wasteful number, since it uses less digits than its factorization.

189640024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33643 (or 33639 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 189640024 is about 13770.9848594790. The cubic root of 189640024 is about 574.5264143338.

The spelling of 189640024 in words is "one hundred eighty-nine million, six hundred forty thousand, twenty-four".