28884061 has 4 divisors (see below), whose sum is σ = 29092000. Its totient is φ = 28676124.

The previous prime is 28884017. The next prime is 28884073. The reversal of 28884061 is 16048882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28884061 - 2¹⁵ = 28851293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28884061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885061) 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, 103761 + ... + 104038.

It is an arithmetic number, because the mean of its divisors is an integer number (7273000).

Almost surely, 2^28884061 is an apocalyptic number.

28884061 is the 2404-th centered decagonal number.

It is an amenable number.

28884061 is a deficient number, since it is larger than the sum of its proper divisors (207939).

28884061 is a wasteful number, since it uses less digits than its factorization.

28884061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207938.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28884061 is about 5374.3893606623. The cubic root of 28884061 is about 306.8217089100.

The spelling of 28884061 in words is "twenty-eight million, eight hundred eighty-four thousand, sixty-one".