28441812 has 48 divisors (see below), whose sum is σ = 76106240. Its totient is φ = 8098272.

The previous prime is 28441807. The next prime is 28441813. The reversal of 28441812 is 21814482.

It is a self number, because there is not a number n which added to its sum of digits gives 28441812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28441813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45639 + ... + 46257.

Almost surely, 2^28441812 is an apocalyptic number.

It is an amenable number.

28441812 is an abundant number, since it is smaller than the sum of its proper divisors (47664428).

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

28441812 is a wasteful number, since it uses less digits than its factorization.

28441812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 28441812 is about 5333.0865359565. The cubic root of 28441812 is about 305.2477141925.

It can be divided in two parts, 2844 and 1812, that added together give a triangular number (4656 = T₉₆).

The spelling of 28441812 in words is "twenty-eight million, four hundred forty-one thousand, eight hundred twelve".