13402560 has 112 divisors (see below), whose sum is σ = 44476416. Its totient is φ = 3412992.

The previous prime is 13402549. The next prime is 13402561. The reversal of 13402560 is 6520431.

It is a happy number.

It is a super-2 number, since 2×13402560² = 359257229107200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402561) 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, 21777 + ... + 22383.

Almost surely, 2^13402560 is an apocalyptic number.

13402560 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 13402560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22238208).

13402560 is an abundant number, since it is smaller than the sum of its proper divisors (31073856).

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

13402560 is a wasteful number, since it uses less digits than its factorization.

13402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13402560 is about 3660.9506961990. The cubic root of 13402560 is about 237.5358985441.

Adding to 13402560 its reverse (6520431), we get a palindrome (19922991).

The spelling of 13402560 in words is "thirteen million, four hundred two thousand, five hundred sixty".