28620316 has 24 divisors (see below), whose sum is σ = 54746496. Its totient is φ = 13032960.

The previous prime is 28620311. The next prime is 28620343. The reversal of 28620316 is 61302682.

It is a super-3 number, since 3×28620316³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28620311) 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, 4681 + ... + 8896.

It is an arithmetic number, because the mean of its divisors is an integer number (2281104).

Almost surely, 2^28620316 is an apocalyptic number.

It is an amenable number.

28620316 is a deficient number, since it is larger than the sum of its proper divisors (26126180).

28620316 is a wasteful number, since it uses less digits than its factorization.

28620316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13629 (or 13627 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 28620316 is about 5349.7958839567. The cubic root of 28620316 is about 305.8849725005.

Adding to 28620316 its reverse (61302682), we get a palindrome (89922998).

It can be divided in two parts, 286 and 20316, that added together give a palindrome (20602).

The spelling of 28620316 in words is "twenty-eight million, six hundred twenty thousand, three hundred sixteen".