28275349 has 8 divisors (see below), whose sum is σ = 29570112. Its totient is φ = 26986080.

The previous prime is 28275323. The next prime is 28275353. The reversal of 28275349 is 94357282.

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 28275349 - 2¹³ = 28267157 is a prime.

It is a super-2 number, since 2×28275349² = 1598990722143602, 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 (28275649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12057 + ... + 14209.

It is an arithmetic number, because the mean of its divisors is an integer number (3696264).

Almost surely, 2^28275349 is an apocalyptic number.

It is an amenable number.

28275349 is a deficient number, since it is larger than the sum of its proper divisors (1294763).

28275349 is a wasteful number, since it uses less digits than its factorization.

28275349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its digits is 120960, while the sum is 40.

The square root of 28275349 is about 5317.4570049978. The cubic root of 28275349 is about 304.6510350873.

The spelling of 28275349 in words is "twenty-eight million, two hundred seventy-five thousand, three hundred forty-nine".