13945828 has 12 divisors (see below), whose sum is σ = 26282620. Its totient is φ = 6436512.

The previous prime is 13945823. The next prime is 13945853. The reversal of 13945828 is 82854931.

It can be written as a sum of positive squares in 2 ways, for example, as 8892324 + 5053504 = 2982^2 + 2248^2 .

It is a super-2 number, since 2×13945828² = 388972237211168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13945823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134043 + ... + 134146.

Almost surely, 2^13945828 is an apocalyptic number.

It is an amenable number.

13945828 is a deficient number, since it is larger than the sum of its proper divisors (12336792).

13945828 is a wasteful number, since it uses less digits than its factorization.

13945828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268206 (or 268204 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 13945828 is about 3734.4113324592. The cubic root of 13945828 is about 240.7029621554.

The spelling of 13945828 in words is "thirteen million, nine hundred forty-five thousand, eight hundred twenty-eight".