13681450 has 12 divisors (see below), whose sum is σ = 25447590. Its totient is φ = 5472560.

The previous prime is 13681433. The next prime is 13681469. The reversal of 13681450 is 5418631.

It can be written as a sum of positive squares in 3 ways, for example, as 13329801 + 351649 = 3651^2 + 593^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136765 + ... + 136864.

Almost surely, 2^13681450 is an apocalyptic number.

13681450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13681450 is a deficient number, since it is larger than the sum of its proper divisors (11766140).

13681450 is a wasteful number, since it uses less digits than its factorization.

13681450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273641 (or 273636 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 13681450 is about 3698.8444141380. The cubic root of 13681450 is about 239.1722059741.

The spelling of 13681450 in words is "thirteen million, six hundred eighty-one thousand, four hundred fifty".