28202022 has 12 divisors (see below), whose sum is σ = 61104420. Its totient is φ = 9400668.

The previous prime is 28202011. The next prime is 28202039. The reversal of 28202022 is 22020282.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1566779 = 28202022 / (2 + 8 + 2 + 0 + 2 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 28201986 and 28202004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 783372 + ... + 783407.

It is an arithmetic number, because the mean of its divisors is an integer number (5092035).

Almost surely, 2^28202022 is an apocalyptic number.

28202022 is an abundant number, since it is smaller than the sum of its proper divisors (32902398).

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

28202022 is a wasteful number, since it uses less digits than its factorization.

28202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566787 (or 1566784 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 28202022 is about 5310.5575978422. The cubic root of 28202022 is about 304.3874546665.

The spelling of 28202022 in words is "twenty-eight million, two hundred two thousand, twenty-two".