28890953 has 8 divisors (see below), whose sum is σ = 35558208. Its totient is φ = 22858704.

The previous prime is 28890941. The next prime is 28890959. The reversal of 28890953 is 35909882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28890953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28890959) 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, 158651 + ... + 158832.

It is an arithmetic number, because the mean of its divisors is an integer number (4444776).

Almost surely, 2^28890953 is an apocalyptic number.

It is an amenable number.

28890953 is a deficient number, since it is larger than the sum of its proper divisors (6667255).

28890953 is a wasteful number, since it uses less digits than its factorization.

28890953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317503.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 28890953 is about 5375.0305115413. The cubic root of 28890953 is about 306.8461104540.

The spelling of 28890953 in words is "twenty-eight million, eight hundred ninety thousand, nine hundred fifty-three".