28621016 has 24 divisors (see below), whose sum is σ = 56107380. Its totient is φ = 13686288.

The previous prime is 28621009. The next prime is 28621027. The reversal of 28621016 is 61012682.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 851 + ... + 7613.

Almost surely, 2^28621016 is an apocalyptic number.

It is an amenable number.

28621016 is a deficient number, since it is larger than the sum of its proper divisors (27486364).

28621016 is a wasteful number, since it uses less digits than its factorization.

28621016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6815 (or 6788 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 28621016 is about 5349.8613066135. The cubic root of 28621016 is about 305.8874662737.

Adding to 28621016 its reverse (61012682), we get a palindrome (89633698).

The spelling of 28621016 in words is "twenty-eight million, six hundred twenty-one thousand, sixteen".