28313782 has 16 divisors (see below), whose sum is σ = 50648832. Its totient is φ = 11606760.

The previous prime is 28313771. The next prime is 28313797. The reversal of 28313782 is 28731382.

It is a super-2 number, since 2×28313782² = 1603340502287048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43644 + ... + 44287.

It is an arithmetic number, because the mean of its divisors is an integer number (3165552).

Almost surely, 2^28313782 is an apocalyptic number.

28313782 is a deficient number, since it is larger than the sum of its proper divisors (22335050).

28313782 is a wasteful number, since it uses less digits than its factorization.

28313782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87963.

The product of its digits is 16128, while the sum is 34.

The square root of 28313782 is about 5321.0696293133. The cubic root of 28313782 is about 304.7890039387.

The spelling of 28313782 in words is "twenty-eight million, three hundred thirteen thousand, seven hundred eighty-two".