12554816 has 14 divisors (see below), whose sum is σ = 24913590. Its totient is φ = 6277376.

The previous prime is 12554809. The next prime is 12554821. The reversal of 12554816 is 61845521.

It can be written as a sum of positive squares in only one way, i.e., 10916416 + 1638400 = 3304^2 + 1280^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98021 + ... + 98148.

Almost surely, 2^12554816 is an apocalyptic number.

12554816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12554816 is a deficient number, since it is larger than the sum of its proper divisors (12358774).

12554816 is an equidigital number, since it uses as much as digits as its factorization.

12554816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196181 (or 196171 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 12554816 is about 3543.2775787398. The cubic root of 12554816 is about 232.4181914360.

The spelling of 12554816 in words is "twelve million, five hundred fifty-four thousand, eight hundred sixteen".