28322492 has 12 divisors (see below), whose sum is σ = 54070296. Its totient is φ = 12873840.

The previous prime is 28322479. The next prime is 28322507. The reversal of 28322492 is 29422382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321803 + ... + 321890.

It is an arithmetic number, because the mean of its divisors is an integer number (4505858).

Almost surely, 2^28322492 is an apocalyptic number.

28322492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28322492 is a deficient number, since it is larger than the sum of its proper divisors (25747804).

28322492 is a wasteful number, since it uses less digits than its factorization.

28322492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643708 (or 643706 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 28322492 is about 5321.8880108473. Note that the first 3 decimals coincide. The cubic root of 28322492 is about 304.8202542094.

The spelling of 28322492 in words is "twenty-eight million, three hundred twenty-two thousand, four hundred ninety-two".