13640094 has 48 divisors (see below), whose sum is σ = 32314464. Its totient is φ = 4132800.

The previous prime is 13640089. The next prime is 13640101. The reversal of 13640094 is 49004631.

13640094 is a `hidden beast` number, since 13 + 640 + 0 + 9 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16204 + ... + 17024.

It is an arithmetic number, because the mean of its divisors is an integer number (673218).

Almost surely, 2^13640094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13640094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16157232).

13640094 is an abundant number, since it is smaller than the sum of its proper divisors (18674370).

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

13640094 is a wasteful number, since it uses less digits than its factorization.

13640094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 13640094 is about 3693.2497884654. The cubic root of 13640094 is about 238.9309745054.

The spelling of 13640094 in words is "thirteen million, six hundred forty thousand, ninety-four".