28051090 has 16 divisors (see below), whose sum is σ = 50777280. Its totient is φ = 11157040.

The previous prime is 28051081. The next prime is 28051097. The reversal of 28051090 is 9015082.

It is not an unprimeable number, because it can be changed into a prime (28051097) 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, 6046 + ... + 9625.

It is an arithmetic number, because the mean of its divisors is an integer number (3173580).

Almost surely, 2^28051090 is an apocalyptic number.

28051090 is a deficient number, since it is larger than the sum of its proper divisors (22726190).

28051090 is a wasteful number, since it uses less digits than its factorization.

28051090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15857.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 28051090 is about 5296.3279732282. The cubic root of 28051090 is about 303.8434746496.

The spelling of 28051090 in words is "twenty-eight million, fifty-one thousand, ninety".