28452277 has 8 divisors (see below), whose sum is σ = 33638400. Its totient is φ = 23546544.

The previous prime is 28452269. The next prime is 28452293. The reversal of 28452277 is 77225482.

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

It is not a de Polignac number, because 28452277 - 2³ = 28452269 is a prime.

It is a super-3 number, since 3×28452277³ (a number of 23 digits) contains 333 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 (28452217) 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 7 ways as a sum of consecutive naturals, for example, 69877 + ... + 70282.

It is an arithmetic number, because the mean of its divisors is an integer number (4204800).

Almost surely, 2^28452277 is an apocalyptic number.

It is an amenable number.

28452277 is a deficient number, since it is larger than the sum of its proper divisors (5186123).

28452277 is a wasteful number, since it uses less digits than its factorization.

28452277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140195.

The product of its digits is 62720, while the sum is 37.

The square root of 28452277 is about 5334.0675848737. The cubic root of 28452277 is about 305.2851476446.

The spelling of 28452277 in words is "twenty-eight million, four hundred fifty-two thousand, two hundred seventy-seven".