78481432 has 8 divisors (see below), whose sum is σ = 147152700. Its totient is φ = 39240712.

The previous prime is 78481423. The next prime is 78481471. The reversal of 78481432 is 23418487.

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78481391 and 78481400.

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, 4905082 + ... + 4905097.

Almost surely, 2^78481432 is an apocalyptic number.

It is an amenable number.

78481432 is a deficient number, since it is larger than the sum of its proper divisors (68671268).

78481432 is a wasteful number, since it uses less digits than its factorization.

78481432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9810185 (or 9810181 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 78481432 is about 8858.9746585031. The cubic root of 78481432 is about 428.1431232991.

The spelling of 78481432 in words is "seventy-eight million, four hundred eighty-one thousand, four hundred thirty-two".