28930776 has 96 divisors (see below), whose sum is σ = 85541040. Its totient is φ = 8128512.

The previous prime is 28930771. The next prime is 28930793. The reversal of 28930776 is 67703982.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28930771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85680 + ... + 86016.

Almost surely, 2^28930776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28930776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42770520).

28930776 is an abundant number, since it is smaller than the sum of its proper divisors (56610264).

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

28930776 is a wasteful number, since it uses less digits than its factorization.

28930776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 28930776 is about 5378.7336799659. The cubic root of 28930776 is about 306.9870302605.

The spelling of 28930776 in words is "twenty-eight million, nine hundred thirty thousand, seven hundred seventy-six".