12497520 has 160 divisors (see below), whose sum is σ = 45568512. Its totient is φ = 2774016.

The previous prime is 12497503. The next prime is 12497561. The reversal of 12497520 is 2579421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72154 + ... + 72326.

Almost surely, 2^12497520 is an apocalyptic number.

12497520 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 12497520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22784256).

12497520 is an abundant number, since it is smaller than the sum of its proper divisors (33070992).

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

12497520 is a wasteful number, since it uses less digits than its factorization.

12497520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 12497520 is about 3535.1831635716. The cubic root of 12497520 is about 232.0640924784.

It can be divided in two parts, 12 and 497520, that multiplied together give a triangular number (5970240 = T₃₄₅₅).

The spelling of 12497520 in words is "twelve million, four hundred ninety-seven thousand, five hundred twenty".