180421432 has 8 divisors (see below), whose sum is σ = 338290200. Its totient is φ = 90210712.

The previous prime is 180421429. The next prime is 180421463. The reversal of 180421432 is 234124081.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 180421397 and 180421406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11276332 + ... + 11276347.

It is an arithmetic number, because the mean of its divisors is an integer number (42286275).

Almost surely, 2^180421432 is an apocalyptic number.

It is an amenable number.

180421432 is a deficient number, since it is larger than the sum of its proper divisors (157868768).

180421432 is a wasteful number, since it uses less digits than its factorization.

180421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22552685 (or 22552681 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 180421432 is about 13432.1045260972. The cubic root of 180421432 is about 565.0619213206.

The spelling of 180421432 in words is "one hundred eighty million, four hundred twenty-one thousand, four hundred thirty-two".