28711634 has 8 divisors (see below), whose sum is σ = 49219968. Its totient is φ = 12304980.

The previous prime is 28711633. The next prime is 28711643. The reversal of 28711634 is 43611782.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28711634.

It is not an unprimeable number, because it can be changed into a prime (28711633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025402 + ... + 1025429.

It is an arithmetic number, because the mean of its divisors is an integer number (6152496).

Almost surely, 2^28711634 is an apocalyptic number.

28711634 is a deficient number, since it is larger than the sum of its proper divisors (20508334).

28711634 is a wasteful number, since it uses less digits than its factorization.

28711634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050840.

The product of its digits is 8064, while the sum is 32.

The square root of 28711634 is about 5358.3238050719. The cubic root of 28711634 is about 306.2099531697.

The spelling of 28711634 in words is "twenty-eight million, seven hundred eleven thousand, six hundred thirty-four".