28901016 has 32 divisors (see below), whose sum is σ = 80281200. Its totient is φ = 9633600.

The previous prime is 28900997. The next prime is 28901017. The reversal of 28901016 is 61010982.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66685 + ... + 67116.

Almost surely, 2^28901016 is an apocalyptic number.

It is an amenable number.

28901016 is an abundant number, since it is smaller than the sum of its proper divisors (51380184).

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

28901016 is a wasteful number, since it uses less digits than its factorization.

28901016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133816 (or 133806 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 28901016 is about 5375.9665177529. The cubic root of 28901016 is about 306.8817321470.

Adding to 28901016 its reverse (61010982), we get a palindrome (89911998).

The spelling of 28901016 in words is "twenty-eight million, nine hundred one thousand, sixteen".