13772828 has 6 divisors (see below), whose sum is σ = 24102456. Its totient is φ = 6886412.

The previous prime is 13772827. The next prime is 13772867. The reversal of 13772828 is 82827731.

It is a super-2 number, since 2×13772828² = 379381582235168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13772791 and 13772800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13772821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721600 + ... + 1721607.

It is an arithmetic number, because the mean of its divisors is an integer number (4017076).

Almost surely, 2^13772828 is an apocalyptic number.

It is an amenable number.

13772828 is a deficient number, since it is larger than the sum of its proper divisors (10329628).

13772828 is a wasteful number, since it uses less digits than its factorization.

13772828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443211 (or 3443209 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 13772828 is about 3711.1760939088. The cubic root of 13772828 is about 239.7034995895.

The spelling of 13772828 in words is "thirteen million, seven hundred seventy-two thousand, eight hundred twenty-eight".