28142322 has 32 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 8609280.

The previous prime is 28142321. The next prime is 28142329. The reversal of 28142322 is 22324182.

It is a junction number, because it is equal to n+sod(n) for n = 28142292 and 28142301.

It is not an unprimeable number, because it can be changed into a prime (28142321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13954 + ... + 15842.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^28142322 is an apocalyptic number.

28142322 is an abundant number, since it is smaller than the sum of its proper divisors (32821518).

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

28142322 is a wasteful number, since it uses less digits than its factorization.

28142322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its digits is 1536, while the sum is 24.

The square root of 28142322 is about 5304.9337413393. The cubic root of 28142322 is about 304.1725200934.

The spelling of 28142322 in words is "twenty-eight million, one hundred forty-two thousand, three hundred twenty-two".