28422468 has 24 divisors (see below), whose sum is σ = 73688160. Its totient is φ = 9474120.

The previous prime is 28422463. The next prime is 28422481. The reversal of 28422468 is 86422482.

It is a happy number.

It is a super-2 number, since 2×28422468² = 1615673374422048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28422463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131478 + ... + 131693.

It is an arithmetic number, because the mean of its divisors is an integer number (3070340).

Almost surely, 2^28422468 is an apocalyptic number.

It is an amenable number.

28422468 is an abundant number, since it is smaller than the sum of its proper divisors (45265692).

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

28422468 is a wasteful number, since it uses less digits than its factorization.

28422468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263184 (or 263176 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 28422468 is about 5331.2726435627. The cubic root of 28422468 is about 305.1784962522.

The spelling of 28422468 in words is "twenty-eight million, four hundred twenty-two thousand, four hundred sixty-eight".