28771382 has 16 divisors (see below), whose sum is σ = 44273952. Its totient is φ = 14017920.

The previous prime is 28771373. The next prime is 28771439. The reversal of 28771382 is 28317782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12743 + ... + 14829.

It is an arithmetic number, because the mean of its divisors is an integer number (2767122).

Almost surely, 2^28771382 is an apocalyptic number.

28771382 is a deficient number, since it is larger than the sum of its proper divisors (15502570).

28771382 is a wasteful number, since it uses less digits than its factorization.

28771382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its digits is 37632, while the sum is 38.

The square root of 28771382 is about 5363.8961585773. The cubic root of 28771382 is about 306.4222104054.

The spelling of 28771382 in words is "twenty-eight million, seven hundred seventy-one thousand, three hundred eighty-two".