13578930 has 72 divisors (see below), whose sum is σ = 36713196. Its totient is φ = 3481920.

The previous prime is 13578919. The next prime is 13578941. The reversal of 13578930 is 3987531.

It is an interprime number because it is at equal distance from previous prime (13578919) and next prime (13578941).

It can be written as a sum of positive squares in 2 ways, for example, as 13155129 + 423801 = 3627^2 + 651^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 86412 + ... + 86568.

Almost surely, 2^13578930 is an apocalyptic number.

13578930 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 13578930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18356598).

13578930 is an abundant number, since it is smaller than the sum of its proper divisors (23134266).

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

13578930 is a wasteful number, since it uses less digits than its factorization.

13578930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 13578930 is about 3684.9599726456. The cubic root of 13578930 is about 238.5733065799.

The spelling of 13578930 in words is "thirteen million, five hundred seventy-eight thousand, nine hundred thirty".