13407720 has 32 divisors (see below), whose sum is σ = 40223520. Its totient is φ = 3575360.

The previous prime is 13407707. The next prime is 13407731. The reversal of 13407720 is 2770431.

13407720 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55746 + ... + 55985.

It is an arithmetic number, because the mean of its divisors is an integer number (1256985).

Almost surely, 2^13407720 is an apocalyptic number.

13407720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13407720 is an abundant number, since it is smaller than the sum of its proper divisors (26815800).

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

13407720 is a wasteful number, since it uses less digits than its factorization.

13407720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111745 (or 111741 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 13407720 is about 3661.6553633569. The cubic root of 13407720 is about 237.5663784915.

The spelling of 13407720 in words is "thirteen million, four hundred seven thousand, seven hundred twenty".