28041912 has 48 divisors (see below), whose sum is σ = 77093640. Its totient is φ = 9206208.

The previous prime is 28041907. The next prime is 28041913. The reversal of 28041912 is 21914082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28041913) 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, 1918 + ... + 7730.

Almost surely, 2^28041912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28041912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38546820).

28041912 is an abundant number, since it is smaller than the sum of its proper divisors (49051728).

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

28041912 is a wasteful number, since it uses less digits than its factorization.

28041912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892 (or 5885 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 28041912 is about 5295.4614529803. The cubic root of 28041912 is about 303.8103329832.

Adding to 28041912 its reverse (21914082), we get a palindrome (49955994).

The spelling of 28041912 in words is "twenty-eight million, forty-one thousand, nine hundred twelve".