28029325 has 6 divisors (see below), whose sum is σ = 34756394. Its totient is φ = 22423440.

The previous prime is 28029289. The next prime is 28029347. The reversal of 28029325 is 52392082.

It can be written as a sum of positive squares in 3 ways, for example, as 6295081 + 21734244 = 2509^2 + 4662^2 .

It is not a de Polignac number, because 28029325 - 2¹⁷ = 27898253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560562 + ... + 560611.

Almost surely, 2^28029325 is an apocalyptic number.

28029325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28029325 is a deficient number, since it is larger than the sum of its proper divisors (6727069).

28029325 is a wasteful number, since it uses less digits than its factorization.

28029325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121183 (or 1121178 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28029325 is about 5294.2728490322. The cubic root of 28029325 is about 303.7648696904.

The spelling of 28029325 in words is "twenty-eight million, twenty-nine thousand, three hundred twenty-five".