28054900 has 18 divisors (see below), whose sum is σ = 60879350. Its totient is φ = 11221920.

The previous prime is 28054889. The next prime is 28054903. The reversal of 28054900 is 945082.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3671056 + 24383844 = 1916^2 + 4938^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28054903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140175 + ... + 140374.

Almost surely, 2^28054900 is an apocalyptic number.

28054900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28054900 is an abundant number, since it is smaller than the sum of its proper divisors (32824450).

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

28054900 is a wasteful number, since it uses less digits than its factorization.

28054900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280563 (or 280556 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 28054900 is about 5296.6876441791. The cubic root of 28054900 is about 303.8572303983.

Adding to 28054900 its reverse (945082), we get a palindrome (28999982).

The spelling of 28054900 in words is "twenty-eight million, fifty-four thousand, nine hundred".