28644134 has 8 divisors (see below), whose sum is σ = 45227640. Its totient is φ = 13568256.

The previous prime is 28644113. The next prime is 28644137. The reversal of 28644134 is 43144682.

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 28644134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28644137) 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, 376859 + ... + 376934.

It is an arithmetic number, because the mean of its divisors is an integer number (5653455).

Almost surely, 2^28644134 is an apocalyptic number.

28644134 is a deficient number, since it is larger than the sum of its proper divisors (16583506).

28644134 is a wasteful number, since it uses less digits than its factorization.

28644134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753814.

The product of its digits is 18432, while the sum is 32.

The square root of 28644134 is about 5352.0214872513. The cubic root of 28644134 is about 305.9698020807.

The spelling of 28644134 in words is "twenty-eight million, six hundred forty-four thousand, one hundred thirty-four".