13391770 has 32 divisors (see below), whose sum is σ = 29001600. Its totient is φ = 4349376.

The previous prime is 13391753. The next prime is 13391779. The reversal of 13391770 is 7719331.

It is not an unprimeable number, because it can be changed into a prime (13391779) 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 15 ways as a sum of consecutive naturals, for example, 3705 + ... + 6364.

It is an arithmetic number, because the mean of its divisors is an integer number (906300).

Almost surely, 2^13391770 is an apocalyptic number.

13391770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13391770 is an abundant number, since it is smaller than the sum of its proper divisors (15609830).

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

13391770 is a wasteful number, since it uses less digits than its factorization.

13391770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 13391770 is about 3659.4767385516. The cubic root of 13391770 is about 237.4721370822.

It can be divided in two parts, 13391 and 770, that added together give a square (14161 = 119²).

The spelling of 13391770 in words is "thirteen million, three hundred ninety-one thousand, seven hundred seventy".