12273540 has 48 divisors (see below), whose sum is σ = 34524672. Its totient is φ = 3257856.

The previous prime is 12273539. The next prime is 12273571. The reversal of 12273540 is 4537221.

12273540 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 self number, because there is not a number n which added to its sum of digits gives 12273540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19917 + ... + 20523.

It is an arithmetic number, because the mean of its divisors is an integer number (719264).

Almost surely, 2^12273540 is an apocalyptic number.

12273540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12273540 is an abundant number, since it is smaller than the sum of its proper divisors (22251132).

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

12273540 is a wasteful number, since it uses less digits than its factorization.

12273540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 12273540 is about 3503.3612431492. The cubic root of 12273540 is about 230.6693795368.

The spelling of 12273540 in words is "twelve million, two hundred seventy-three thousand, five hundred forty".