13998630 has 64 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 3444480.

The previous prime is 13998613. The next prime is 13998631. The reversal of 13998630 is 3689931.

13998630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13998631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23071 + ... + 23669.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^13998630 is an apocalyptic number.

13998630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13998630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144000).

13998630 is an abundant number, since it is smaller than the sum of its proper divisors (22289370).

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

13998630 is a wasteful number, since it uses less digits than its factorization.

13998630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 13998630 is about 3741.4743083442. The cubic root of 13998630 is about 241.0063645065.

The spelling of 13998630 in words is "thirteen million, nine hundred ninety-eight thousand, six hundred thirty".