28355672 has 8 divisors (see below), whose sum is σ = 53166900. Its totient is φ = 14177832.

The previous prime is 28355633. The next prime is 28355687. The reversal of 28355672 is 27655382.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1772222 + ... + 1772237.

Almost surely, 2^28355672 is an apocalyptic number.

It is an amenable number.

28355672 is a deficient number, since it is larger than the sum of its proper divisors (24811228).

28355672 is a wasteful number, since it uses less digits than its factorization.

28355672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544465 (or 3544461 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 28355672 is about 5325.0044131437. The cubic root of 28355672 is about 304.9392407859.

It can be divided in two parts, 283 and 55672, that added together give a palindrome (55955).

The spelling of 28355672 in words is "twenty-eight million, three hundred fifty-five thousand, six hundred seventy-two".