28038300 has 72 divisors (see below), whose sum is σ = 85411200. Its totient is φ = 7081920.

The previous prime is 28038299. The next prime is 28038337. The reversal of 28038300 is 383082.

It is a super-2 number, since 2×28038300² = 1572292533780000, which contains 22 as substring.

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, 3241 + ... + 8159.

Almost surely, 2^28038300 is an apocalyptic number.

28038300 is a gapful number since it is divisible by the number (20) 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 28038300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42705600).

28038300 is an abundant number, since it is smaller than the sum of its proper divisors (57372900).

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

28038300 is a wasteful number, since it uses less digits than its factorization.

28038300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955 (or 4948 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28038300 is about 5295.1203952318. The cubic root of 28038300 is about 303.7972881042.

The spelling of 28038300 in words is "twenty-eight million, thirty-eight thousand, three hundred".