28914661 has 8 divisors (see below), whose sum is σ = 30355200. Its totient is φ = 27505920.

The previous prime is 28914659. The next prime is 28914667. The reversal of 28914661 is 16641982.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28914661 - 2¹ = 28914659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28914661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28914667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6076 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (3794400).

Almost surely, 2^28914661 is an apocalyptic number.

It is an amenable number.

28914661 is a deficient number, since it is larger than the sum of its proper divisors (1440539).

28914661 is a wasteful number, since it uses less digits than its factorization.

28914661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899.

The product of its digits is 20736, while the sum is 37.

The square root of 28914661 is about 5377.2354421208. The cubic root of 28914661 is about 306.9300204426.

The spelling of 28914661 in words is "twenty-eight million, nine hundred fourteen thousand, six hundred sixty-one".