28210772 has 12 divisors (see below), whose sum is σ = 49415520. Its totient is φ = 14092056.

The previous prime is 28210733. The next prime is 28210817. The reversal of 28210772 is 27701282.

It is a congruent number.

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, 2603 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (4117960).

Almost surely, 2^28210772 is an apocalyptic number.

It is an amenable number.

28210772 is a deficient number, since it is larger than the sum of its proper divisors (21204748).

28210772 is a wasteful number, since it uses less digits than its factorization.

28210772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670 (or 6668 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 28210772 is about 5311.3813645793. The cubic root of 28210772 is about 304.4189313082.

It can be divided in two parts, 28210 and 772, that added together give a palindrome (28982).

The spelling of 28210772 in words is "twenty-eight million, two hundred ten thousand, seven hundred seventy-two".