28266634 has 8 divisors (see below), whose sum is σ = 46254528. Its totient is φ = 12848460.

The previous prime is 28266629. The next prime is 28266647. The reversal of 28266634 is 43666282.

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 = 28266593 and 28266602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642402 + ... + 642445.

It is an arithmetic number, because the mean of its divisors is an integer number (5781816).

Almost surely, 2^28266634 is an apocalyptic number.

28266634 is a deficient number, since it is larger than the sum of its proper divisors (17987894).

28266634 is a wasteful number, since it uses less digits than its factorization.

28266634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284860.

The product of its digits is 82944, while the sum is 37.

The square root of 28266634 is about 5316.6374711842. The cubic root of 28266634 is about 304.6197321245.

It can be divided in two parts, 28266 and 634, that added together give a square (28900 = 170²).

The spelling of 28266634 in words is "twenty-eight million, two hundred sixty-six thousand, six hundred thirty-four".