12492278 has 8 divisors (see below), whose sum is σ = 18754200. Its totient is φ = 6240880.

The previous prime is 12492257. The next prime is 12492281. The reversal of 12492278 is 87229421.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (2344275).

Almost surely, 2^12492278 is an apocalyptic number.

12492278 is a deficient number, since it is larger than the sum of its proper divisors (6261922).

12492278 is a wasteful number, since it uses less digits than its factorization.

12492278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262.

The product of its digits is 16128, while the sum is 35.

The square root of 12492278 is about 3534.4416815107. The cubic root of 12492278 is about 232.0316420378.

It can be divided in two parts, 124922 and 78, that added together give a cube (125000 = 50³).

The spelling of 12492278 in words is "twelve million, four hundred ninety-two thousand, two hundred seventy-eight".