28326890 has 16 divisors (see below), whose sum is σ = 51160032. Its totient is φ = 11292624.

The previous prime is 28326889. The next prime is 28326911. The reversal of 28326890 is 9862382.

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 7 ways as a sum of consecutive naturals, for example, 1544 + ... + 7683.

It is an arithmetic number, because the mean of its divisors is an integer number (3197502).

Almost surely, 2^28326890 is an apocalyptic number.

28326890 is a deficient number, since it is larger than the sum of its proper divisors (22833142).

28326890 is a wasteful number, since it uses less digits than its factorization.

28326890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 28326890 is about 5322.3011940325. The cubic root of 28326890 is about 304.8360311885.

The spelling of 28326890 in words is "twenty-eight million, three hundred twenty-six thousand, eight hundred ninety".