12272340 has 48 divisors (see below), whose sum is σ = 35860608. Its totient is φ = 3129984.

The previous prime is 12272327. The next prime is 12272341. The reversal of 12272340 is 4327221.

12272340 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12272340² = 301220658151200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272341) 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, 3067 + ... + 5826.

It is an arithmetic number, because the mean of its divisors is an integer number (747096).

Almost surely, 2^12272340 is an apocalyptic number.

12272340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12272340 is an abundant number, since it is smaller than the sum of its proper divisors (23588268).

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

12272340 is a wasteful number, since it uses less digits than its factorization.

12272340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928 (or 8926 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 12272340 is about 3503.1899748658. The cubic root of 12272340 is about 230.6618616765.

Adding to 12272340 its reverse (4327221), we get a palindrome (16599561).

The spelling of 12272340 in words is "twelve million, two hundred seventy-two thousand, three hundred forty".