13640850 has 36 divisors (see below), whose sum is σ = 36649626. Its totient is φ = 3637440.

The previous prime is 13640849. The next prime is 13640867. The reversal of 13640850 is 5804631.

13640850 is a `hidden beast` number, since 13 + 640 + 8 + 5 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 12467961 + 1172889 = 3531^2 + 1083^2 .

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14707 + ... + 15606.

Almost surely, 2^13640850 is an apocalyptic number.

13640850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13640850 is an abundant number, since it is smaller than the sum of its proper divisors (23008776).

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

13640850 is a wasteful number, since it uses less digits than its factorization.

13640850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30331 (or 30323 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 13640850 is about 3693.3521359329. The cubic root of 13640850 is about 238.9353886607.

The spelling of 13640850 in words is "thirteen million, six hundred forty thousand, eight hundred fifty".