28702071 has 6 divisors (see below), whose sum is σ = 41458560. Its totient is φ = 19134708.

The previous prime is 28702061. The next prime is 28702087. The reversal of 28702071 is 17020782.

It is not a de Polignac number, because 28702071 - 2⁷ = 28701943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28702061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1594551 + ... + 1594568.

It is an arithmetic number, because the mean of its divisors is an integer number (6909760).

Almost surely, 2^28702071 is an apocalyptic number.

28702071 is a deficient number, since it is larger than the sum of its proper divisors (12756489).

28702071 is a wasteful number, since it uses less digits than its factorization.

28702071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189125 (or 3189122 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 28702071 is about 5357.4313808018. The cubic root of 28702071 is about 306.1759528878.

The spelling of 28702071 in words is "twenty-eight million, seven hundred two thousand, seventy-one".