12277240 has 32 divisors (see below), whose sum is σ = 28517760. Its totient is φ = 4752000.

The previous prime is 12277219. The next prime is 12277241. The reversal of 12277240 is 4277221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3711 + ... + 6190.

It is an arithmetic number, because the mean of its divisors is an integer number (891180).

Almost surely, 2^12277240 is an apocalyptic number.

12277240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12277240 is an abundant number, since it is smaller than the sum of its proper divisors (16240520).

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

12277240 is a wasteful number, since it uses less digits than its factorization.

12277240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943 (or 9939 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 12277240 is about 3503.8892676567. The cubic root of 12277240 is about 230.6925565217.

The spelling of 12277240 in words is "twelve million, two hundred seventy-seven thousand, two hundred forty".