28422434 has 8 divisors (see below), whose sum is σ = 44487360. Its totient is φ = 13593316.

The previous prime is 28422413. The next prime is 28422439. The reversal of 28422434 is 43422482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28422397 and 28422406.

It is not an unprimeable number, because it can be changed into a prime (28422439) 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 3 ways as a sum of consecutive naturals, for example, 308894 + ... + 308985.

It is an arithmetic number, because the mean of its divisors is an integer number (5560920).

Almost surely, 2^28422434 is an apocalyptic number.

28422434 is a deficient number, since it is larger than the sum of its proper divisors (16064926).

28422434 is a wasteful number, since it uses less digits than its factorization.

28422434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617904.

The product of its digits is 12288, while the sum is 29.

The square root of 28422434 is about 5331.2694548297. The cubic root of 28422434 is about 305.1783745636.

The spelling of 28422434 in words is "twenty-eight million, four hundred twenty-two thousand, four hundred thirty-four".