28963992 has 64 divisors (see below), whose sum is σ = 76308480. Its totient is φ = 9143552.

The previous prime is 28963967. The next prime is 28964009. The reversal of 28963992 is 29936982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75433 + ... + 75815.

It is an arithmetic number, because the mean of its divisors is an integer number (1192320).

Almost surely, 2^28963992 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 28963992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38154240).

28963992 is an abundant number, since it is smaller than the sum of its proper divisors (47344488).

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

28963992 is a wasteful number, since it uses less digits than its factorization.

28963992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 548 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 28963992 is about 5381.8205098275. The cubic root of 28963992 is about 307.1044713006.

The spelling of 28963992 in words is "twenty-eight million, nine hundred sixty-three thousand, nine hundred ninety-two".