28073826 has 48 divisors (see below), whose sum is σ = 67324608. Its totient is φ = 8383200.

The previous prime is 28073819. The next prime is 28073831. The reversal of 28073826 is 62837082.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13060 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (1402596).

Almost surely, 2^28073826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28073826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33662304).

28073826 is an abundant number, since it is smaller than the sum of its proper divisors (39250782).

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

28073826 is a wasteful number, since it uses less digits than its factorization.

28073826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28073826 is about 5298.4739312372. The cubic root of 28073826 is about 303.9255429955.

The spelling of 28073826 in words is "twenty-eight million, seventy-three thousand, eight hundred twenty-six".