12778488 has 48 divisors (see below), whose sum is σ = 36433800. Its totient is φ = 4034880.

The previous prime is 12778483. The next prime is 12778499. The reversal of 12778488 is 88487721.

It is a super-2 number, since 2×12778488² = 326579511132288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3303 + ... + 6038.

Almost surely, 2^12778488 is an apocalyptic number.

12778488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12778488 is an abundant number, since it is smaller than the sum of its proper divisors (23655312).

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

12778488 is a wasteful number, since it uses less digits than its factorization.

12778488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9372 (or 9365 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 12778488 is about 3574.7011063864. The cubic root of 12778488 is about 233.7903008478.

The spelling of 12778488 in words is "twelve million, seven hundred seventy-eight thousand, four hundred eighty-eight".