28969426 has 8 divisors (see below), whose sum is σ = 43884684. Its totient is φ = 14341200.

The previous prime is 28969403. The next prime is 28969427. The reversal of 28969426 is 62496982.

It can be written as a sum of positive squares in 2 ways, for example, as 19053225 + 9916201 = 4365^2 + 3149^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28969427) 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, 71505 + ... + 71908.

Almost surely, 2^28969426 is an apocalyptic number.

28969426 is a deficient number, since it is larger than the sum of its proper divisors (14915258).

28969426 is a wasteful number, since it uses less digits than its factorization.

28969426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143516.

The product of its digits is 373248, while the sum is 46.

The square root of 28969426 is about 5382.3253339054. The cubic root of 28969426 is about 307.1236756210.

The spelling of 28969426 in words is "twenty-eight million, nine hundred sixty-nine thousand, four hundred twenty-six".