13531828 has 6 divisors (see below), whose sum is σ = 23680706. Its totient is φ = 6765912.

The previous prime is 13531811. The next prime is 13531849. The reversal of 13531828 is 82813531.

It can be written as a sum of positive squares in only one way, i.e., 10614564 + 2917264 = 3258^2 + 1708^2 .

It is a super-2 number, since 2×13531828² = 366220738043168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13531828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1691475 + ... + 1691482.

Almost surely, 2^13531828 is an apocalyptic number.

It is an amenable number.

13531828 is a deficient number, since it is larger than the sum of its proper divisors (10148878).

13531828 is a wasteful number, since it uses less digits than its factorization.

13531828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382961 (or 3382959 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 13531828 is about 3678.5633065098. The cubic root of 13531828 is about 238.2971361180.

The spelling of 13531828 in words is "thirteen million, five hundred thirty-one thousand, eight hundred twenty-eight".