13953520 has 40 divisors (see below), whose sum is σ = 37077984. Its totient is φ = 4783872.

The previous prime is 13953491. The next prime is 13953521. The reversal of 13953520 is 2535931.

13953520 = T₂₃₆₀ + T₂₃₆₁ + ... + T₂₃₆₄.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13953521) 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 7 ways as a sum of consecutive naturals, for example, 11899 + ... + 13018.

Almost surely, 2^13953520 is an apocalyptic number.

13953520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13953520 is an abundant number, since it is smaller than the sum of its proper divisors (23124464).

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

13953520 is a wasteful number, since it uses less digits than its factorization.

13953520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24937 (or 24931 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 13953520 is about 3735.4410716808. The cubic root of 13953520 is about 240.7472082885.

The spelling of 13953520 in words is "thirteen million, nine hundred fifty-three thousand, five hundred twenty".