28292090 has 16 divisors (see below), whose sum is σ = 51687072. Its totient is φ = 11147664.

The previous prime is 28292071. The next prime is 28292101. The reversal of 28292090 is 9029282.

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, 20444 + ... + 21783.

It is an arithmetic number, because the mean of its divisors is an integer number (3230442).

Almost surely, 2^28292090 is an apocalyptic number.

28292090 is a deficient number, since it is larger than the sum of its proper divisors (23394982).

28292090 is a wasteful number, since it uses less digits than its factorization.

28292090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42301.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 28292090 is about 5319.0309267760. The cubic root of 28292090 is about 304.7111481886.

The spelling of 28292090 in words is "twenty-eight million, two hundred ninety-two thousand, ninety".