28382631 has 8 divisors (see below), whose sum is σ = 37868160. Its totient is φ = 18909432.

The previous prime is 28382611. The next prime is 28382633. The reversal of 28382631 is 13628382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28382631 - 2⁹ = 28382119 is a prime.

It is a super-2 number, since 2×28382631² = 1611147484964322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28382592 and 28382601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28382633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7080 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (4733520).

Almost surely, 2^28382631 is an apocalyptic number.

28382631 is a deficient number, since it is larger than the sum of its proper divisors (9485529).

28382631 is a wasteful number, since it uses less digits than its factorization.

28382631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165.

The product of its digits is 13824, while the sum is 33.

The square root of 28382631 is about 5327.5351711650. The cubic root of 28382631 is about 305.0358499471.

The spelling of 28382631 in words is "twenty-eight million, three hundred eighty-two thousand, six hundred thirty-one".