12271490 has 32 divisors (see below), whose sum is σ = 27540864. Its totient is φ = 3824640.

The previous prime is 12271477. The next prime is 12271499. The reversal of 12271490 is 9417221.

It is not an unprimeable number, because it can be changed into a prime (12271499) 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, 7199 + ... + 8738.

It is an arithmetic number, because the mean of its divisors is an integer number (860652).

Almost surely, 2^12271490 is an apocalyptic number.

12271490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12271490 is an abundant number, since it is smaller than the sum of its proper divisors (15269374).

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

12271490 is a wasteful number, since it uses less digits than its factorization.

12271490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15962.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12271490 is about 3503.0686547654. The cubic root of 12271490 is about 230.6565362289.

The spelling of 12271490 in words is "twelve million, two hundred seventy-one thousand, four hundred ninety".