28649116 has 24 divisors (see below), whose sum is σ = 50982624. Its totient is φ = 14085120.

The previous prime is 28649111. The next prime is 28649123. The reversal of 28649116 is 61194682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28649111) 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 7 ways as a sum of consecutive naturals, for example, 108801 + ... + 109063.

It is an arithmetic number, because the mean of its divisors is an integer number (2124276).

Almost surely, 2^28649116 is an apocalyptic number.

It is an amenable number.

28649116 is a deficient number, since it is larger than the sum of its proper divisors (22333508).

28649116 is a wasteful number, since it uses less digits than its factorization.

28649116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 619 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 28649116 is about 5352.4868986295. The cubic root of 28649116 is about 305.9875398973.

The spelling of 28649116 in words is "twenty-eight million, six hundred forty-nine thousand, one hundred sixteen".