13894578 has 40 divisors (see below), whose sum is σ = 31363200. Its totient is φ = 4597560.

The previous prime is 13894577. The next prime is 13894619. The reversal of 13894578 is 87549831.

It is not an unprimeable number, because it can be changed into a prime (13894577) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32023 + ... + 32453.

It is an arithmetic number, because the mean of its divisors is an integer number (784080).

Almost surely, 2^13894578 is an apocalyptic number.

13894578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13894578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15681600).

13894578 is an abundant number, since it is smaller than the sum of its proper divisors (17468622).

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

13894578 is a wasteful number, since it uses less digits than its factorization.

13894578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 635 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 13894578 is about 3727.5431587039. The cubic root of 13894578 is about 240.4077443765.

The spelling of 13894578 in words is "thirteen million, eight hundred ninety-four thousand, five hundred seventy-eight".