28961706 has 8 divisors (see below), whose sum is σ = 57923424. Its totient is φ = 9653900.

The previous prime is 28961701. The next prime is 28961707. The reversal of 28961706 is 60716982.

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

28961706 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28961701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2413470 + ... + 2413481.

It is an arithmetic number, because the mean of its divisors is an integer number (7240428).

Almost surely, 2^28961706 is an apocalyptic number.

28961706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28961706 is a wasteful number, since it uses less digits than its factorization.

28961706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826956.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28961706 is about 5381.6081239719. The cubic root of 28961706 is about 307.0963916214.

The spelling of 28961706 in words is "twenty-eight million, nine hundred sixty-one thousand, seven hundred six".