28867764 has 24 divisors (see below), whose sum is σ = 70903840. Its totient is φ = 9116064.

The previous prime is 28867763. The next prime is 28867793. The reversal of 28867764 is 46776882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28867763) 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, 63079 + ... + 63534.

Almost surely, 2^28867764 is an apocalyptic number.

It is an amenable number.

28867764 is an abundant number, since it is smaller than the sum of its proper divisors (42036076).

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

28867764 is a wasteful number, since it uses less digits than its factorization.

28867764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126639 (or 126637 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 28867764 is about 5372.8729744895. The cubic root of 28867764 is about 306.7639929480.

The spelling of 28867764 in words is "twenty-eight million, eight hundred sixty-seven thousand, seven hundred sixty-four".