28270090 has 16 divisors (see below), whose sum is σ = 51039072. Its totient is φ = 11274064.

The previous prime is 28270079. The next prime is 28270093. The reversal of 28270090 is 9007282.

It is not an unprimeable number, because it can be changed into a prime (28270093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (3189942).

Almost surely, 2^28270090 is an apocalyptic number.

28270090 is a deficient number, since it is larger than the sum of its proper divisors (22768982).

28270090 is a wasteful number, since it uses less digits than its factorization.

28270090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28270090 is about 5316.9624787091. The cubic root of 28270090 is about 304.6321463239.

The spelling of 28270090 in words is "twenty-eight million, two hundred seventy thousand, ninety".