28826442 has 40 divisors (see below), whose sum is σ = 65235456. Its totient is φ = 9513288.

The previous prime is 28826437. The next prime is 28826443. The reversal of 28826442 is 24462882.

It is a happy number.

28826442 is a `hidden beast` number, since 2 + 8 + 8 + 2 + 644 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28826397 and 28826406.

It is not an unprimeable number, because it can be changed into a prime (28826443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16503 + ... + 18165.

Almost surely, 2^28826442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28826442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32617728).

28826442 is an abundant number, since it is smaller than the sum of its proper divisors (36409014).

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

28826442 is a wasteful number, since it uses less digits than its factorization.

28826442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1775 counting only the distinct ones).

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

The square root of 28826442 is about 5369.0261686827. The cubic root of 28826442 is about 306.6175533089.

The spelling of 28826442 in words is "twenty-eight million, eight hundred twenty-six thousand, four hundred forty-two".