12499776 has 42 divisors (see below), whose sum is σ = 35830002. Its totient is φ = 4166400.

The previous prime is 12499757. The next prime is 12499801. The reversal of 12499776 is 67799421.

It can be written as a sum of positive squares in only one way, i.e., 12110400 + 389376 = 3480^2 + 624^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10275 + ... + 11426.

Almost surely, 2^12499776 is an apocalyptic number.

12499776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12499776 is an abundant number, since it is smaller than the sum of its proper divisors (23330226).

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

12499776 is a wasteful number, since it uses less digits than its factorization.

12499776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21719 (or 21706 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 12499776 is about 3535.5022274070. The cubic root of 12499776 is about 232.0780553845.

It can be divided in two parts, 1249 and 9776, that added together give a square (11025 = 105²).

The spelling of 12499776 in words is "twelve million, four hundred ninety-nine thousand, seven hundred seventy-six".