12477798 has 24 divisors (see below), whose sum is σ = 27198288. Its totient is φ = 4134192.

The previous prime is 12477793. The next prime is 12477811. The reversal of 12477798 is 89777421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477791) 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, 1111 + ... + 5117.

It is an arithmetic number, because the mean of its divisors is an integer number (1133262).

Almost surely, 2^12477798 is an apocalyptic number.

12477798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12477798 is an abundant number, since it is smaller than the sum of its proper divisors (14720490).

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

12477798 is a wasteful number, since it uses less digits than its factorization.

12477798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4188 (or 4185 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 12477798 is about 3532.3926735288. The cubic root of 12477798 is about 231.9419568431.

It can be divided in two parts, 1247 and 7798, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 12477798 in words is "twelve million, four hundred seventy-seven thousand, seven hundred ninety-eight".