28870382 has 8 divisors (see below), whose sum is σ = 45188496. Its totient is φ = 13807552.

The previous prime is 28870379. The next prime is 28870409. The reversal of 28870382 is 28307882.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 313763 + ... + 313854.

It is an arithmetic number, because the mean of its divisors is an integer number (5648562).

Almost surely, 2^28870382 is an apocalyptic number.

28870382 is a deficient number, since it is larger than the sum of its proper divisors (16318114).

28870382 is a wasteful number, since it uses less digits than its factorization.

28870382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627642.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 28870382 is about 5373.1166002610. The cubic root of 28870382 is about 306.7732660811.

Subtracting from 28870382 its reverse (28307882), we obtain a square (562500 = 750²).

The spelling of 28870382 in words is "twenty-eight million, eight hundred seventy thousand, three hundred eighty-two".