12440274 has 32 divisors (see below), whose sum is σ = 31021056. Its totient is φ = 3231120.

The previous prime is 12440273. The next prime is 12440293. The reversal of 12440274 is 47204421.

It is not an unprimeable number, because it can be changed into a prime (12440273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13002 + ... + 13925.

It is an arithmetic number, because the mean of its divisors is an integer number (969408).

Almost surely, 2^12440274 is an apocalyptic number.

12440274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12440274 is an abundant number, since it is smaller than the sum of its proper divisors (18580782).

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

12440274 is a wasteful number, since it uses less digits than its factorization.

12440274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26950.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 12440274 is about 3527.0772602822. The cubic root of 12440274 is about 231.7092200239.

Adding to 12440274 its reverse (47204421), we get a palindrome (59644695).

The spelling of 12440274 in words is "twelve million, four hundred forty thousand, two hundred seventy-four".