13920670 has 16 divisors (see below), whose sum is σ = 25130160. Its totient is φ = 5552064.

The previous prime is 13920659. The next prime is 13920679. The reversal of 13920670 is 7602931.

It is a super-3 number, since 3×13920670³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13920679) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1954 + ... + 5626.

It is an arithmetic number, because the mean of its divisors is an integer number (1570635).

Almost surely, 2^13920670 is an apocalyptic number.

13920670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13920670 is a deficient number, since it is larger than the sum of its proper divisors (11209490).

13920670 is a wasteful number, since it uses less digits than its factorization.

13920670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13920670 is about 3731.0414095799. The cubic root of 13920670 is about 240.5581338915.

The spelling of 13920670 in words is "thirteen million, nine hundred twenty thousand, six hundred seventy".