12259440 has 60 divisors (see below), whose sum is σ = 41173704. Its totient is φ = 3268992.

The previous prime is 12259439. The next prime is 12259441. The reversal of 12259440 is 4495221.

It is an interprime number because it is at equal distance from previous prime (12259439) and next prime (12259441).

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×12259440² = 300587738227200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12259441) 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, 7794 + ... + 9233.

Almost surely, 2^12259440 is an apocalyptic number.

12259440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12259440 is an abundant number, since it is smaller than the sum of its proper divisors (28914264).

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

12259440 is a wasteful number, since it uses less digits than its factorization.

12259440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17046 (or 17037 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12259440 is about 3501.3483117222. The cubic root of 12259440 is about 230.5810137100.

The spelling of 12259440 in words is "twelve million, two hundred fifty-nine thousand, four hundred forty".