13056040 has 64 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 4815360.

The previous prime is 13056037. The next prime is 13056077. The reversal of 13056040 is 4065031.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 13055999 and 13056017.

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, 30951 + ... + 31369.

It is an arithmetic number, because the mean of its divisors is an integer number (496125).

Almost surely, 2^13056040 is an apocalyptic number.

13056040 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 13056040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15876000).

13056040 is an abundant number, since it is smaller than the sum of its proper divisors (18695960).

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

13056040 is a wasteful number, since it uses less digits than its factorization.

13056040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13056040 is about 3613.3142680924. The cubic root of 13056040 is about 235.4708531475.

The spelling of 13056040 in words is "thirteen million, fifty-six thousand, forty".