13955720 has 32 divisors (see below), whose sum is σ = 31541400. Its totient is φ = 5557248.

The previous prime is 13955719. The next prime is 13955743. The reversal of 13955720 is 2755931.

It can be written as a sum of positive squares in 4 ways, for example, as 12208036 + 1747684 = 3494^2 + 1322^2 .

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 7 ways as a sum of consecutive naturals, for example, 10112 + ... + 11408.

Almost surely, 2^13955720 is an apocalyptic number.

13955720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13955720 is an abundant number, since it is smaller than the sum of its proper divisors (17585680).

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

13955720 is a wasteful number, since it uses less digits than its factorization.

13955720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 13955720 is about 3735.7355366782. The cubic root of 13955720 is about 240.7598601982.

The spelling of 13955720 in words is "thirteen million, nine hundred fifty-five thousand, seven hundred twenty".