28331016 has 48 divisors (see below), whose sum is σ = 82394640. Its totient is φ = 8094240.

The previous prime is 28331003. The next prime is 28331029. The reversal of 28331016 is 61013382.

It is an interprime number because it is at equal distance from previous prime (28331003) and next prime (28331029).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10870 + ... + 13221.

It is an arithmetic number, because the mean of its divisors is an integer number (1716555).

Almost surely, 2^28331016 is an apocalyptic number.

It is an amenable number.

28331016 is an abundant number, since it is smaller than the sum of its proper divisors (54063624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28331016 is a wasteful number, since it uses less digits than its factorization.

28331016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24114 (or 24103 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 28331016 is about 5322.6887942092. The cubic root of 28331016 is about 304.8508309353.

Adding to 28331016 its reverse (61013382), we get a palindrome (89344398).

The spelling of 28331016 in words is "twenty-eight million, three hundred thirty-one thousand, sixteen".