28030254 has 48 divisors (see below), whose sum is σ = 66233088. Its totient is φ = 7883568.

The previous prime is 28030241. The next prime is 28030267. The reversal of 28030254 is 45203082.

It is an interprime number because it is at equal distance from previous prime (28030241) and next prime (28030267).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18987 + ... + 20409.

It is an arithmetic number, because the mean of its divisors is an integer number (1379856).

Almost surely, 2^28030254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28030254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33116544).

28030254 is an abundant number, since it is smaller than the sum of its proper divisors (38202834).

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

28030254 is a wasteful number, since it uses less digits than its factorization.

28030254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509 (or 1502 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 28030254 is about 5294.3605846221. The cubic root of 28030254 is about 303.7682256334.

The spelling of 28030254 in words is "twenty-eight million, thirty thousand, two hundred fifty-four".