13897028 has 6 divisors (see below), whose sum is σ = 24319806. Its totient is φ = 6948512.

The previous prime is 13897027. The next prime is 13897031. The reversal of 13897028 is 82079831.

It can be written as a sum of positive squares in only one way, i.e., 11343424 + 2553604 = 3368^2 + 1598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13896982 and 13897000.

It is not an unprimeable number, because it can be changed into a prime (13897027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1737125 + ... + 1737132.

It is an arithmetic number, because the mean of its divisors is an integer number (4053301).

Almost surely, 2^13897028 is an apocalyptic number.

It is an amenable number.

13897028 is a deficient number, since it is larger than the sum of its proper divisors (10422778).

13897028 is a wasteful number, since it uses less digits than its factorization.

13897028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474261 (or 3474259 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 13897028 is about 3727.8717789109. The cubic root of 13897028 is about 240.4218737335.

The spelling of 13897028 in words is "thirteen million, eight hundred ninety-seven thousand, twenty-eight".