28427626 has 4 divisors (see below), whose sum is σ = 42641442. Its totient is φ = 14213812.

The previous prime is 28427593. The next prime is 28427639. The reversal of 28427626 is 62672482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 6007401 = 4735^2 + 2451^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7106905 + ... + 7106908.

Almost surely, 2^28427626 is an apocalyptic number.

28427626 is a deficient number, since it is larger than the sum of its proper divisors (14213816).

28427626 is a wasteful number, since it uses less digits than its factorization.

28427626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14213815.

The product of its digits is 64512, while the sum is 37.

The square root of 28427626 is about 5331.7563710282. The cubic root of 28427626 is about 305.1969560082.

The spelling of 28427626 in words is "twenty-eight million, four hundred twenty-seven thousand, six hundred twenty-six".