28841090 has 8 divisors (see below), whose sum is σ = 51913980. Its totient is φ = 11536432.

The previous prime is 28841077. The next prime is 28841119. The reversal of 28841090 is 9014882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28697449 + 143641 = 5357^2 + 379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442045 + ... + 1442064.

Almost surely, 2^28841090 is an apocalyptic number.

28841090 is a deficient number, since it is larger than the sum of its proper divisors (23072890).

28841090 is a wasteful number, since it uses less digits than its factorization.

28841090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884116.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 28841090 is about 5370.3901161834. The cubic root of 28841090 is about 306.6694798629.

The spelling of 28841090 in words is "twenty-eight million, eight hundred forty-one thousand, ninety".