28554812 has 24 divisors (see below), whose sum is σ = 58708272. Its totient is φ = 11980800.

The previous prime is 28554811. The next prime is 28554817. The reversal of 28554812 is 21845582.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28554811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24389 + ... + 25532.

It is an arithmetic number, because the mean of its divisors is an integer number (2446178).

Almost surely, 2^28554812 is an apocalyptic number.

28554812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28554812 is an abundant number, since it is smaller than the sum of its proper divisors (30153460).

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

28554812 is a wasteful number, since it uses less digits than its factorization.

28554812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49949 (or 49947 counting only the distinct ones).

The product of its digits is 25600, while the sum is 35.

The square root of 28554812 is about 5343.6702742591. The cubic root of 28554812 is about 305.6514321620.

It can be divided in two parts, 2855 and 4812, that added together give a palindrome (7667).

The spelling of 28554812 in words is "twenty-eight million, five hundred fifty-four thousand, eight hundred twelve".