28090046 has 4 divisors (see below), whose sum is σ = 42135072. Its totient is φ = 14045022.

The previous prime is 28090039. The next prime is 28090081. The reversal of 28090046 is 64009082.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7022510 + ... + 7022513.

It is an arithmetic number, because the mean of its divisors is an integer number (10533768).

Almost surely, 2^28090046 is an apocalyptic number.

28090046 is a deficient number, since it is larger than the sum of its proper divisors (14045026).

28090046 is a wasteful number, since it uses less digits than its factorization.

28090046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14045025.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28090046 is about 5300.0043396209. The cubic root of 28090046 is about 303.9840639730.

The spelling of 28090046 in words is "twenty-eight million, ninety thousand, forty-six".