28422712 has 8 divisors (see below), whose sum is σ = 53292600. Its totient is φ = 14211352.

The previous prime is 28422707. The next prime is 28422721. The reversal of 28422712 is 21722482.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1776412 + ... + 1776427.

It is an arithmetic number, because the mean of its divisors is an integer number (6661575).

Almost surely, 2^28422712 is an apocalyptic number.

It is an amenable number.

28422712 is a deficient number, since it is larger than the sum of its proper divisors (24869888).

28422712 is a wasteful number, since it uses less digits than its factorization.

28422712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552845 (or 3552841 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 28422712 is about 5331.2955273554. The cubic root of 28422712 is about 305.1793695442.

It can be divided in two parts, 28 and 422712, that added together give a triangular number (422740 = T₉₁₉).

The spelling of 28422712 in words is "twenty-eight million, four hundred twenty-two thousand, seven hundred twelve".