13445772 has 12 divisors (see below), whose sum is σ = 31373496. Its totient is φ = 4481920.

The previous prime is 13445741. The next prime is 13445791. The reversal of 13445772 is 27754431.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 560229 + ... + 560252.

It is an arithmetic number, because the mean of its divisors is an integer number (2614458).

Almost surely, 2^13445772 is an apocalyptic number.

13445772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13445772 is an abundant number, since it is smaller than the sum of its proper divisors (17927724).

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

13445772 is a wasteful number, since it uses less digits than its factorization.

13445772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120488 (or 1120486 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 13445772 is about 3666.8476925010. The cubic root of 13445772 is about 237.7909092685.

The spelling of 13445772 in words is "thirteen million, four hundred forty-five thousand, seven hundred seventy-two".