28364990 has 16 divisors (see below), whose sum is σ = 51144048. Its totient is φ = 11326656.

The previous prime is 28364971. The next prime is 28365019. The reversal of 28364990 is 9946382.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754 + ... + 8906.

It is an arithmetic number, because the mean of its divisors is an integer number (3196503).

Almost surely, 2^28364990 is an apocalyptic number.

28364990 is a deficient number, since it is larger than the sum of its proper divisors (22779058).

28364990 is a wasteful number, since it uses less digits than its factorization.

28364990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 28364990 is about 5325.8792701300. The cubic root of 28364990 is about 304.9726393086.

The spelling of 28364990 in words is "twenty-eight million, three hundred sixty-four thousand, nine hundred ninety".