28354636 has 6 divisors (see below), whose sum is σ = 49620620. Its totient is φ = 14177316.

The previous prime is 28354621. The next prime is 28354637. The reversal of 28354636 is 63645382.

It is a junction number, because it is equal to n+sod(n) for n = 28354595 and 28354604.

It is not an unprimeable number, because it can be changed into a prime (28354637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3544326 + ... + 3544333.

Almost surely, 2^28354636 is an apocalyptic number.

It is an amenable number.

28354636 is a deficient number, since it is larger than the sum of its proper divisors (21265984).

28354636 is a wasteful number, since it uses less digits than its factorization.

28354636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7088663 (or 7088661 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 28354636 is about 5324.9071353405. The cubic root of 28354636 is about 304.9355269975.

The spelling of 28354636 in words is "twenty-eight million, three hundred fifty-four thousand, six hundred thirty-six".