28211672 has 16 divisors (see below), whose sum is σ = 52957800. Its totient is φ = 14089600.

The previous prime is 28211671. The next prime is 28211683. The reversal of 28211672 is 27611282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28211671) 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, 8672 + ... + 11472.

Almost surely, 2^28211672 is an apocalyptic number.

It is an amenable number.

28211672 is a deficient number, since it is larger than the sum of its proper divisors (24746128).

28211672 is a wasteful number, since it uses less digits than its factorization.

28211672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066 (or 4062 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 28211672 is about 5311.4660876259. The cubic root of 28211672 is about 304.4221685365.

The spelling of 28211672 in words is "twenty-eight million, two hundred eleven thousand, six hundred seventy-two".