28822420 has 24 divisors (see below), whose sum is σ = 66030048. Its totient is φ = 10480800.

The previous prime is 28822397. The next prime is 28822447. The reversal of 28822420 is 2422882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65286 + ... + 65725.

It is an arithmetic number, because the mean of its divisors is an integer number (2751252).

Almost surely, 2^28822420 is an apocalyptic number.

28822420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28822420 is an abundant number, since it is smaller than the sum of its proper divisors (37207628).

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

28822420 is a wasteful number, since it uses less digits than its factorization.

28822420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131031 (or 131029 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 28822420 is about 5368.6515997967. The cubic root of 28822420 is about 306.6032924073.

The spelling of 28822420 in words is "twenty-eight million, eight hundred twenty-two thousand, four hundred twenty".