13697828 has 6 divisors (see below), whose sum is σ = 23971206. Its totient is φ = 6848912.

The previous prime is 13697791. The next prime is 13697833. The reversal of 13697828 is 82879631.

It can be written as a sum of positive squares in only one way, i.e., 6927424 + 6770404 = 2632^2 + 2602^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712225 + ... + 1712232.

It is an arithmetic number, because the mean of its divisors is an integer number (3995201).

Almost surely, 2^13697828 is an apocalyptic number.

It is an amenable number.

13697828 is a deficient number, since it is larger than the sum of its proper divisors (10273378).

13697828 is a wasteful number, since it uses less digits than its factorization.

13697828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424461 (or 3424459 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 13697828 is about 3701.0576866620. The cubic root of 13697828 is about 239.2676052277.

The spelling of 13697828 in words is "thirteen million, six hundred ninety-seven thousand, eight hundred twenty-eight".