12426390 has 24 divisors (see below), whose sum is σ = 32308848. Its totient is φ = 3313680.

The previous prime is 12426389. The next prime is 12426409. The reversal of 12426390 is 9362421.

12426390 is a `hidden beast` number, since 1 + 24 + 2 + 639 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68946 + ... + 69125.

It is an arithmetic number, because the mean of its divisors is an integer number (1346202).

Almost surely, 2^12426390 is an apocalyptic number.

12426390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12426390 is an abundant number, since it is smaller than the sum of its proper divisors (19882458).

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

12426390 is a wasteful number, since it uses less digits than its factorization.

12426390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138084 (or 138081 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 12426390 is about 3525.1085089682. The cubic root of 12426390 is about 231.6229880446.

The spelling of 12426390 in words is "twelve million, four hundred twenty-six thousand, three hundred ninety".