28702422 has 24 divisors (see below), whose sum is σ = 71072976. Its totient is φ = 8200656.

The previous prime is 28702363. The next prime is 28702441. The reversal of 28702422 is 22420782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113773 + ... + 114024.

It is an arithmetic number, because the mean of its divisors is an integer number (2961374).

Almost surely, 2^28702422 is an apocalyptic number.

28702422 is an abundant number, since it is smaller than the sum of its proper divisors (42370554).

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

28702422 is a wasteful number, since it uses less digits than its factorization.

28702422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227812 (or 227809 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 28702422 is about 5357.4641389374. The cubic root of 28702422 is about 306.1772009664.

The spelling of 28702422 in words is "twenty-eight million, seven hundred two thousand, four hundred twenty-two".