28076631 has 8 divisors (see below), whose sum is σ = 40838784. Its totient is φ = 17016120.

The previous prime is 28076627. The next prime is 28076647. The reversal of 28076631 is 13667082.

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

It is not a de Polignac number, because 28076631 - 2² = 28076627 is a prime.

It is a super-2 number, since 2×28076631² = 1576594416620322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 850807 = 28076631 / (2 + 8 + 0 + 7 + 6 + 6 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 28076592 and 28076601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28076621) 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, 425371 + ... + 425436.

It is an arithmetic number, because the mean of its divisors is an integer number (5104848).

Almost surely, 2^28076631 is an apocalyptic number.

28076631 is a deficient number, since it is larger than the sum of its proper divisors (12762153).

28076631 is a wasteful number, since it uses less digits than its factorization.

28076631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850821.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 28076631 is about 5298.7386234839. The cubic root of 28076631 is about 303.9356649119.

The spelling of 28076631 in words is "twenty-eight million, seventy-six thousand, six hundred thirty-one".