12919432 has 8 divisors (see below), whose sum is σ = 24223950. Its totient is φ = 6459712.

The previous prime is 12919429. The next prime is 12919441. The reversal of 12919432 is 23491921.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 1454436 = 3386^2 + 1206^2 .

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 = 12919394 and 12919403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807457 + ... + 807472.

Almost surely, 2^12919432 is an apocalyptic number.

It is an amenable number.

12919432 is a deficient number, since it is larger than the sum of its proper divisors (11304518).

12919432 is a wasteful number, since it uses less digits than its factorization.

12919432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614935 (or 1614931 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 12919432 is about 3594.3611393403. The cubic root of 12919432 is about 234.6467122467.

The spelling of 12919432 in words is "twelve million, nine hundred nineteen thousand, four hundred thirty-two".