13440070 has 32 divisors (see below), whose sum is σ = 27936576. Its totient is φ = 4560000.

The previous prime is 13440059. The next prime is 13440071. The reversal of 13440070 is 7004431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440071) 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, 6120 + ... + 8020.

It is an arithmetic number, because the mean of its divisors is an integer number (873018).

Almost surely, 2^13440070 is an apocalyptic number.

13440070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13440070 is an abundant number, since it is smaller than the sum of its proper divisors (14496506).

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

13440070 is a wasteful number, since it uses less digits than its factorization.

13440070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 13440070 is about 3666.0701029849. The cubic root of 13440070 is about 237.7572908822.

It can be divided in two parts, 134 and 40070, that added together give a palindrome (40204).

The spelling of 13440070 in words is "thirteen million, four hundred forty thousand, seventy".