28449826 has 4 divisors (see below), whose sum is σ = 42674742. Its totient is φ = 14224912.

The previous prime is 28449803. The next prime is 28449833. The reversal of 28449826 is 62894482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24651225 + 3798601 = 4965^2 + 1949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7112455 + ... + 7112458.

Almost surely, 2^28449826 is an apocalyptic number.

28449826 is a deficient number, since it is larger than the sum of its proper divisors (14224916).

28449826 is a wasteful number, since it uses less digits than its factorization.

28449826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14224915.

The product of its digits is 221184, while the sum is 43.

The square root of 28449826 is about 5333.8378303057. The cubic root of 28449826 is about 305.2763812064.

The spelling of 28449826 in words is "twenty-eight million, four hundred forty-nine thousand, eight hundred twenty-six".