28626842 has 8 divisors (see below), whose sum is σ = 43096116. Its totient is φ = 14261472.

The previous prime is 28626839. The next prime is 28626847. The reversal of 28626842 is 24862682.

It can be written as a sum of positive squares in 2 ways, for example, as 27888961 + 737881 = 5281^2 + 859^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28626796 and 28626805.

It is not an unprimeable number, because it can be changed into a prime (28626847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25283 + ... + 26390.

Almost surely, 2^28626842 is an apocalyptic number.

28626842 is a deficient number, since it is larger than the sum of its proper divisors (14469274).

28626842 is a wasteful number, since it uses less digits than its factorization.

28626842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51952.

The product of its digits is 73728, while the sum is 38.

The square root of 28626842 is about 5350.4057790041. The cubic root of 28626842 is about 305.9082200149.

The spelling of 28626842 in words is "twenty-eight million, six hundred twenty-six thousand, eight hundred forty-two".