432181940 has 24 divisors (see below), whose sum is σ = 909649440. Its totient is φ = 172479008.

The previous prime is 432181933. The next prime is 432181951. The reversal of 432181940 is 49181234.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 432181897 and 432181906.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15530 + ... + 33249.

It is an arithmetic number, because the mean of its divisors is an integer number (37902060).

Almost surely, 2^432181940 is an apocalyptic number.

It is an amenable number.

432181940 is an abundant number, since it is smaller than the sum of its proper divisors (477467500).

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

432181940 is a wasteful number, since it uses less digits than its factorization.

432181940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49231 (or 49229 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 432181940 is about 20788.9860262592. The cubic root of 432181940 is about 756.0587400585.

The spelling of 432181940 in words is "four hundred thirty-two million, one hundred eighty-one thousand, nine hundred forty".