28332029 has 6 divisors (see below), whose sum is σ = 31141950. Its totient is φ = 25756280.

The previous prime is 28332001. The next prime is 28332061. The reversal of 28332029 is 92023382.

It can be written as a sum of positive squares in only one way, i.e., 20340100 + 7991929 = 4510^2 + 2827^2 .

It is not a de Polignac number, because 28332029 - 2¹⁶ = 28266493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28331992 and 28332010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28332229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116954 + ... + 117195.

It is an arithmetic number, because the mean of its divisors is an integer number (5190325).

Almost surely, 2^28332029 is an apocalyptic number.

It is an amenable number.

28332029 is a deficient number, since it is larger than the sum of its proper divisors (2809921).

28332029 is a wasteful number, since it uses less digits than its factorization.

28332029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234171 (or 234160 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 28332029 is about 5322.7839520311. The cubic root of 28332029 is about 304.8544642938.

The spelling of 28332029 in words is "twenty-eight million, three hundred thirty-two thousand, twenty-nine".