12877738 has 8 divisors (see below), whose sum is σ = 20452932. Its totient is φ = 6060096.

The previous prime is 12877727. The next prime is 12877757. The reversal of 12877738 is 83777821.

It can be written as a sum of positive squares in 2 ways, for example, as 11923209 + 954529 = 3453^2 + 977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12877738² = 331672271993288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12877694 and 12877703.

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, 189345 + ... + 189412.

Almost surely, 2^12877738 is an apocalyptic number.

12877738 is a deficient number, since it is larger than the sum of its proper divisors (7575194).

12877738 is a wasteful number, since it uses less digits than its factorization.

12877738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378776.

The product of its digits is 131712, while the sum is 43.

The square root of 12877738 is about 3588.5565343185. The cubic root of 12877738 is about 234.3940204534.

It can be divided in two parts, 1287 and 7738, that added together give a square (9025 = 95²).

The spelling of 12877738 in words is "twelve million, eight hundred seventy-seven thousand, seven hundred thirty-eight".