28426422 has 16 divisors (see below), whose sum is σ = 57492720. Its totient is φ = 9368832.

The previous prime is 28426403. The next prime is 28426423. The reversal of 28426422 is 22462482.

It is a super-2 number, since 2×28426422² = 1616122935444168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28426422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28426423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26083 + ... + 27150.

It is an arithmetic number, because the mean of its divisors is an integer number (3593295).

Almost surely, 2^28426422 is an apocalyptic number.

28426422 is an abundant number, since it is smaller than the sum of its proper divisors (29066298).

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

28426422 is a wasteful number, since it uses less digits than its factorization.

28426422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53327.

The product of its digits is 12288, while the sum is 30.

The square root of 28426422 is about 5331.6434614479. The cubic root of 28426422 is about 305.1926472614.

The spelling of 28426422 in words is "twenty-eight million, four hundred twenty-six thousand, four hundred twenty-two".