28953090 has 96 divisors (see below), whose sum is σ = 80061696. Its totient is φ = 7244160.

The previous prime is 28953083. The next prime is 28953103. The reversal of 28953090 is 9035982.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146872 + ... + 147068.

It is an arithmetic number, because the mean of its divisors is an integer number (833976).

Almost surely, 2^28953090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28953090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40030848).

28953090 is an abundant number, since it is smaller than the sum of its proper divisors (51108606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28953090 is a wasteful number, since it uses less digits than its factorization.

28953090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 28953090 is about 5380.8075602088. The cubic root of 28953090 is about 307.0659352556.

The spelling of 28953090 in words is "twenty-eight million, nine hundred fifty-three thousand, ninety".