13779628 has 12 divisors (see below), whose sum is σ = 24299352. Its totient is φ = 6836960.

The previous prime is 13779613. The next prime is 13779631. The reversal of 13779628 is 82697731.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12625 + ... + 13672.

It is an arithmetic number, because the mean of its divisors is an integer number (2024946).

Almost surely, 2^13779628 is an apocalyptic number.

It is an amenable number.

13779628 is a deficient number, since it is larger than the sum of its proper divisors (10519724).

13779628 is a wasteful number, since it uses less digits than its factorization.

13779628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26432 (or 26430 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 13779628 is about 3712.0921324773. The cubic root of 13779628 is about 239.7429423633.

The spelling of 13779628 in words is "thirteen million, seven hundred seventy-nine thousand, six hundred twenty-eight".