12653620 has 96 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 3991680.

The previous prime is 12653617. The next prime is 12653621. The reversal of 12653620 is 2635621.

It is a super-2 number, since 2×12653620² = 320228198208800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178185 + ... + 178255.

It is an arithmetic number, because the mean of its divisors is an integer number (342720).

Almost surely, 2^12653620 is an apocalyptic number.

12653620 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 12653620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16450560).

12653620 is an abundant number, since it is smaller than the sum of its proper divisors (20247500).

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

12653620 is a wasteful number, since it uses less digits than its factorization.

12653620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 12653620 is about 3557.1927133626. The cubic root of 12653620 is about 233.0262945636.

The spelling of 12653620 in words is "twelve million, six hundred fifty-three thousand, six hundred twenty".