28011814 has 16 divisors (see below), whose sum is σ = 44495280. Its totient is φ = 13188960.

The previous prime is 28011811. The next prime is 28011821. The reversal of 28011814 is 41811082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28011811) 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, 4444 + ... + 8704.

It is an arithmetic number, because the mean of its divisors is an integer number (2780955).

Almost surely, 2^28011814 is an apocalyptic number.

28011814 is a deficient number, since it is larger than the sum of its proper divisors (16483466).

28011814 is a wasteful number, since it uses less digits than its factorization.

28011814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 28011814 is about 5292.6188224734. The cubic root of 28011814 is about 303.7015986374.

Adding to 28011814 its reverse (41811082), we get a palindrome (69822896).

The spelling of 28011814 in words is "twenty-eight million, eleven thousand, eight hundred fourteen".