13750920 has 48 divisors (see below), whose sum is σ = 44691660. Its totient is φ = 3666816.

The previous prime is 13750907. The next prime is 13750921. The reversal of 13750920 is 2905731.

13750920 is a `hidden beast` number, since 137 + 509 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13439556 + 311364 = 3666^2 + 558^2 .

It is not an unprimeable number, because it can be changed into a prime (13750921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18739 + ... + 19458.

Almost surely, 2^13750920 is an apocalyptic number.

13750920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13750920 is an abundant number, since it is smaller than the sum of its proper divisors (30940740).

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

13750920 is a wasteful number, since it uses less digits than its factorization.

13750920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38214 (or 38207 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 13750920 is about 3708.2232942475. The cubic root of 13750920 is about 239.5763358931.

The spelling of 13750920 in words is "thirteen million, seven hundred fifty thousand, nine hundred twenty".