12578480 has 20 divisors (see below), whose sum is σ = 29245152. Its totient is φ = 5031360.

The previous prime is 12578477. The next prime is 12578497. The reversal of 12578480 is 8487521.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×12578480² = 316436318220800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12578480.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78536 + ... + 78695.

Almost surely, 2^12578480 is an apocalyptic number.

12578480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12578480 is an abundant number, since it is smaller than the sum of its proper divisors (16666672).

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

12578480 is a wasteful number, since it uses less digits than its factorization.

12578480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157244 (or 157238 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 12578480 is about 3546.6152878484. The cubic root of 12578480 is about 232.5641246026.

The spelling of 12578480 in words is "twelve million, five hundred seventy-eight thousand, four hundred eighty".