12275520 has 112 divisors (see below), whose sum is σ = 41087040. Its totient is φ = 3096576.

The previous prime is 12275509. The next prime is 12275567. The reversal of 12275520 is 2557221.

12275520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 17904 + ... + 18576.

Almost surely, 2^12275520 is an apocalyptic number.

12275520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12275520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20543520).

12275520 is an abundant number, since it is smaller than the sum of its proper divisors (28811520).

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

12275520 is a wasteful number, since it uses less digits than its factorization.

12275520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 12275520 is about 3503.6438175134. The cubic root of 12275520 is about 230.6817829350.

It can be divided in two parts, 1227 and 5520, that multiplied together give a triangular number (6773040 = T₃₆₈₀).

The spelling of 12275520 in words is "twelve million, two hundred seventy-five thousand, five hundred twenty".