28275629 has 8 divisors (see below), whose sum is σ = 29820000. Its totient is φ = 26736912.

The previous prime is 28275619. The next prime is 28275647. The reversal of 28275629 is 92657282.

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 28275629 - 2⁴ = 28275613 is a prime.

It is a super-2 number, since 2×28275629² = 1599022390691282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28275619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12422 + ... + 14520.

It is an arithmetic number, because the mean of its divisors is an integer number (3727500).

Almost surely, 2^28275629 is an apocalyptic number.

It is an amenable number.

28275629 is a deficient number, since it is larger than the sum of its proper divisors (1544371).

28275629 is a wasteful number, since it uses less digits than its factorization.

28275629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827.

The product of its digits is 120960, while the sum is 41.

The square root of 28275629 is about 5317.4833333072. The cubic root of 28275629 is about 304.6520406983.

The spelling of 28275629 in words is "twenty-eight million, two hundred seventy-five thousand, six hundred twenty-nine".