28996992 has 48 divisors (see below), whose sum is σ = 83445180. Its totient is φ = 9665280.

The previous prime is 28996969. The next prime is 28996993. The reversal of 28996992 is 29969982.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28996993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11434 + ... + 13737.

Almost surely, 2^28996992 is an apocalyptic number.

It is an amenable number.

28996992 is an abundant number, since it is smaller than the sum of its proper divisors (54448188).

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

28996992 is a wasteful number, since it uses less digits than its factorization.

28996992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25191 (or 25176 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 28996992 is about 5384.8855141033. The cubic root of 28996992 is about 307.2210597542.

The spelling of 28996992 in words is "twenty-eight million, nine hundred ninety-six thousand, nine hundred ninety-two".