28901028 has 36 divisors (see below), whose sum is σ = 73027248. Its totient is φ = 8892000.

The previous prime is 28901027. The next prime is 28901029. The reversal of 28901028 is 82010982.

It is an interprime number because it is at equal distance from previous prime (28901027) and next prime (28901029).

It is a junction number, because it is equal to n+sod(n) for n = 28900986 and 28901004.

It is not an unprimeable number, because it can be changed into a prime (28901027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5098 + ... + 9153.

Almost surely, 2^28901028 is an apocalyptic number.

It is an amenable number.

28901028 is an abundant number, since it is smaller than the sum of its proper divisors (44126220).

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

28901028 is a wasteful number, since it uses less digits than its factorization.

28901028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14284 (or 14269 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 28901028 is about 5375.9676338311. The cubic root of 28901028 is about 306.8817746205.

The spelling of 28901028 in words is "twenty-eight million, nine hundred one thousand, twenty-eight".