28930806 has 48 divisors (see below), whose sum is σ = 68281200. Its totient is φ = 8817984.

The previous prime is 28930799. The next prime is 28930813. The reversal of 28930806 is 60803982.

It is an interprime number because it is at equal distance from previous prime (28930799) and next prime (28930813).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8460 + ... + 11376.

It is an arithmetic number, because the mean of its divisors is an integer number (1422525).

Almost surely, 2^28930806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28930806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34140600).

28930806 is an abundant number, since it is smaller than the sum of its proper divisors (39350394).

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

28930806 is a wasteful number, since it uses less digits than its factorization.

28930806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973 (or 2970 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28930806 is about 5378.7364687257. The cubic root of 28930806 is about 306.9871363714.

The spelling of 28930806 in words is "twenty-eight million, nine hundred thirty thousand, eight hundred six".