13775250 has 32 divisors (see below), whose sum is σ = 34384896. Its totient is φ = 3673200.

The previous prime is 13775249. The next prime is 13775273. The reversal of 13775250 is 5257731.

13775250 = 268² + 269² + ... + 392².

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8434 + ... + 9933.

It is an arithmetic number, because the mean of its divisors is an integer number (1074528).

Almost surely, 2^13775250 is an apocalyptic number.

13775250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13775250 is an abundant number, since it is smaller than the sum of its proper divisors (20609646).

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

13775250 is a wasteful number, since it uses less digits than its factorization.

13775250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387 (or 18377 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 13775250 is about 3711.5023912157. The cubic root of 13775250 is about 239.7175496657.

The spelling of 13775250 in words is "thirteen million, seven hundred seventy-five thousand, two hundred fifty".