13530828 has 24 divisors (see below), whose sum is σ = 31680432. Its totient is φ = 4494784.

The previous prime is 13530823. The next prime is 13530833. The reversal of 13530828 is 82803531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13530823) and next prime (13530833).

It is a junction number, because it is equal to n+sod(n) for n = 13530795 and 13530804.

It is not an unprimeable number, because it can be changed into a prime (13530823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026 + ... + 5582.

It is an arithmetic number, because the mean of its divisors is an integer number (1320018).

Almost surely, 2^13530828 is an apocalyptic number.

It is an amenable number.

13530828 is an abundant number, since it is smaller than the sum of its proper divisors (18149604).

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

13530828 is a wasteful number, since it uses less digits than its factorization.

13530828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881 (or 3879 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 13530828 is about 3678.4273813683. The cubic root of 13530828 is about 238.2912659328.

The spelling of 13530828 in words is "thirteen million, five hundred thirty thousand, eight hundred twenty-eight".