13292240 has 40 divisors (see below), whose sum is σ = 33284328. Its totient is φ = 4907520.

The previous prime is 13292219. The next prime is 13292269. The reversal of 13292240 is 4229231.

It can be written as a sum of positive squares in 4 ways, for example, as 817216 + 12475024 = 904^2 + 3532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5351 + ... + 7430.

Almost surely, 2^13292240 is an apocalyptic number.

13292240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13292240 is an abundant number, since it is smaller than the sum of its proper divisors (19992088).

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

13292240 is a wasteful number, since it uses less digits than its factorization.

13292240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12807 (or 12801 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13292240 is about 3645.8524380452. The cubic root of 13292240 is about 236.8823619333.

The spelling of 13292240 in words is "thirteen million, two hundred ninety-two thousand, two hundred forty".