28435842 has 12 divisors (see below), whose sum is σ = 61611030. Its totient is φ = 9478608.

The previous prime is 28435819. The next prime is 28435853. The reversal of 28435842 is 24853482.

It can be written as a sum of positive squares in only one way, i.e., 28100601 + 335241 = 5301^2 + 579^2 .

It is a super-2 number, since 2×28435842² = 1617194220497928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28435797 and 28435806.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 789867 + ... + 789902.

Almost surely, 2^28435842 is an apocalyptic number.

28435842 is an abundant number, since it is smaller than the sum of its proper divisors (33175188).

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

28435842 is a wasteful number, since it uses less digits than its factorization.

28435842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579777 (or 1579774 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28435842 is about 5332.5267931816. The cubic root of 28435842 is about 305.2263553052.

The spelling of 28435842 in words is "twenty-eight million, four hundred thirty-five thousand, eight hundred forty-two".