28811602 has 8 divisors (see below), whose sum is σ = 44271612. Its totient is φ = 14054400.

The previous prime is 28811533. The next prime is 28811603. The reversal of 28811602 is 20611882.

It can be written as a sum of positive squares in 2 ways, for example, as 28291761 + 519841 = 5319^2 + 721^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28811603) 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, 175599 + ... + 175762.

Almost surely, 2^28811602 is an apocalyptic number.

28811602 is a deficient number, since it is larger than the sum of its proper divisors (15460010).

28811602 is a wasteful number, since it uses less digits than its factorization.

28811602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351404.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 28811602 is about 5367.6439896849. The cubic root of 28811602 is about 306.5649281817.

It can be divided in two parts, 2 and 8811602, that multiplied together give a square (17623204 = 4198²).

The spelling of 28811602 in words is "twenty-eight million, eight hundred eleven thousand, six hundred two".