28626426 has 32 divisors (see below), whose sum is σ = 66964800. Its totient is φ = 9039600.

The previous prime is 28626401. The next prime is 28626427. The reversal of 28626426 is 62462682.

28626426 is a `hidden beast` number, since 2 + 8 + 6 + 2 + 642 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (28626427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12925 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (2092650).

Almost surely, 2^28626426 is an apocalyptic number.

28626426 is an abundant number, since it is smaller than the sum of its proper divisors (38338374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28626426 is a wasteful number, since it uses less digits than its factorization.

28626426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27931 (or 27925 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28626426 is about 5350.3669033067. The cubic root of 28626426 is about 305.9067382070.

The spelling of 28626426 in words is "twenty-eight million, six hundred twenty-six thousand, four hundred twenty-six".