28994992 has 30 divisors (see below), whose sum is σ = 60837252. Its totient is φ = 13381056.

The previous prime is 28994963. The next prime is 28994993. The reversal of 28994992 is 29949982.

It is a super-2 number, since 2×28994992² = 1681419122160128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (28994993) 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, 2658 + ... + 8065.

Almost surely, 2^28994992 is an apocalyptic number.

It is an amenable number.

28994992 is an abundant number, since it is smaller than the sum of its proper divisors (31842260).

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

28994992 is a wasteful number, since it uses less digits than its factorization.

28994992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10757 (or 10738 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The square root of 28994992 is about 5384.6998059316. The cubic root of 28994992 is about 307.2139963060.

The spelling of 28994992 in words is "twenty-eight million, nine hundred ninety-four thousand, nine hundred ninety-two".