13445770 has 32 divisors (see below), whose sum is σ = 26227152. Its totient is φ = 4933632.

The previous prime is 13445741. The next prime is 13445791. The reversal of 13445770 is 7754431.

It can be written as a sum of positive squares in 8 ways, for example, as 6215049 + 7230721 = 2493^2 + 2689^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37914 + ... + 38266.

Almost surely, 2^13445770 is an apocalyptic number.

13445770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13445770 is a deficient number, since it is larger than the sum of its proper divisors (12781382).

13445770 is a wasteful number, since it uses less digits than its factorization.

13445770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 13445770 is about 3666.8474197872. The cubic root of 13445770 is about 237.7908974784.

The spelling of 13445770 in words is "thirteen million, four hundred forty-five thousand, seven hundred seventy".