13491828 has 72 divisors (see below), whose sum is σ = 40057472. Its totient is φ = 3748032.

The previous prime is 13491817. The next prime is 13491833. The reversal of 13491828 is 82819431.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13491792 and 13491801.

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, 8601 + ... + 10047.

Almost surely, 2^13491828 is an apocalyptic number.

13491828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13491828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20028736).

13491828 is an abundant number, since it is smaller than the sum of its proper divisors (26565644).

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

13491828 is a wasteful number, since it uses less digits than its factorization.

13491828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1496 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13491828 is about 3673.1223774876. The cubic root of 13491828 is about 238.0621027590.

The spelling of 13491828 in words is "thirteen million, four hundred ninety-one thousand, eight hundred twenty-eight".