28907282 has 4 divisors (see below), whose sum is σ = 43360926. Its totient is φ = 14453640.

The previous prime is 28907279. The next prime is 28907353. The reversal of 28907282 is 28270982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24790441 + 4116841 = 4979^2 + 2029^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7226819 + ... + 7226822.

Almost surely, 2^28907282 is an apocalyptic number.

28907282 is a deficient number, since it is larger than the sum of its proper divisors (14453644).

28907282 is a wasteful number, since it uses less digits than its factorization.

28907282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453643.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 28907282 is about 5376.5492650956. The cubic root of 28907282 is about 306.9039087835.

The spelling of 28907282 in words is "twenty-eight million, nine hundred seven thousand, two hundred eighty-two".