28890092 has 48 divisors (see below), whose sum is σ = 63748608. Its totient is φ = 11128320.

The previous prime is 28890091. The next prime is 28890097. The reversal of 28890092 is 29009882.

It is not an unprimeable number, because it can be changed into a prime (28890091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29393 + ... + 30359.

It is an arithmetic number, because the mean of its divisors is an integer number (1328096).

Almost surely, 2^28890092 is an apocalyptic number.

28890092 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28890092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31874304).

28890092 is an abundant number, since it is smaller than the sum of its proper divisors (34858516).

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

28890092 is a wasteful number, since it uses less digits than its factorization.

28890092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 28890092 is about 5374.9504183760. The cubic root of 28890092 is about 306.8430622434.

The spelling of 28890092 in words is "twenty-eight million, eight hundred ninety thousand, ninety-two".