13897750 has 32 divisors (see below), whose sum is σ = 27158976. Its totient is φ = 5315200.

The previous prime is 13897717. The next prime is 13897777. The reversal of 13897750 is 5779831.

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, 4542 + ... + 6958.

It is an arithmetic number, because the mean of its divisors is an integer number (848718).

Almost surely, 2^13897750 is an apocalyptic number.

13897750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13897750 is a deficient number, since it is larger than the sum of its proper divisors (13261226).

13897750 is a wasteful number, since it uses less digits than its factorization.

13897750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457 (or 2447 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 13897750 is about 3727.9686157477. The cubic root of 13897750 is about 240.4260372517.

The spelling of 13897750 in words is "thirteen million, eight hundred ninety-seven thousand, seven hundred fifty".