28241900 has 36 divisors (see below), whose sum is σ = 61871040. Its totient is φ = 11188800.

The previous prime is 28241893. The next prime is 28241909. The reversal of 28241900 is 914282.

It is a super-2 number, since 2×28241900² = 1595209831220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28241900.

It is not an unprimeable number, because it can be changed into a prime (28241909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9605 + ... + 12195.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^28241900 is an apocalyptic number.

28241900 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 28241900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30935520).

28241900 is an abundant number, since it is smaller than the sum of its proper divisors (33629140).

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

28241900 is a wasteful number, since it uses less digits than its factorization.

28241900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 28241900 is about 5314.3108678360. The cubic root of 28241900 is about 304.5308562772.

The spelling of 28241900 in words is "twenty-eight million, two hundred forty-one thousand, nine hundred".