28839701 has 16 divisors (see below), whose sum is σ = 35069760. Its totient is φ = 23374080.

The previous prime is 28839689. The next prime is 28839721. The reversal of 28839701 is 10793882.

It is a cyclic number.

It is not a de Polignac number, because 28839701 - 2⁶ = 28839637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28839721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506 + ... + 7611.

It is an arithmetic number, because the mean of its divisors is an integer number (2191860).

Almost surely, 2^28839701 is an apocalyptic number.

It is an amenable number.

28839701 is a deficient number, since it is larger than the sum of its proper divisors (6230059).

28839701 is a wasteful number, since it uses less digits than its factorization.

28839701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 28839701 is about 5370.2607944121. The cubic root of 28839701 is about 306.6645566700.

The spelling of 28839701 in words is "twenty-eight million, eight hundred thirty-nine thousand, seven hundred one".