28284632 has 8 divisors (see below), whose sum is σ = 53033700. Its totient is φ = 14142312.

The previous prime is 28284601. The next prime is 28284637. The reversal of 28284632 is 23648282.

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

It is a junction number, because it is equal to n+sod(n) for n = 28284592 and 28284601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28284637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1767782 + ... + 1767797.

Almost surely, 2^28284632 is an apocalyptic number.

It is an amenable number.

28284632 is a deficient number, since it is larger than the sum of its proper divisors (24749068).

28284632 is a wasteful number, since it uses less digits than its factorization.

28284632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535585 (or 3535581 counting only the distinct ones).

The product of its digits is 36864, while the sum is 35.

The square root of 28284632 is about 5318.3298130146. The cubic root of 28284632 is about 304.6843711465.

The spelling of 28284632 in words is "twenty-eight million, two hundred eighty-four thousand, six hundred thirty-two".