28645351 has 6 divisors (see below), whose sum is σ = 33322200. Its totient is φ = 24553116.

The previous prime is 28645349. The next prime is 28645367. The reversal of 28645351 is 15354682.

It is not a de Polignac number, because 28645351 - 2¹ = 28645349 is a prime.

It is a super-2 number, since 2×28645351² = 1641112267826402, 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 (28645651) 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, 292251 + ... + 292348.

It is an arithmetic number, because the mean of its divisors is an integer number (5553700).

Almost surely, 2^28645351 is an apocalyptic number.

28645351 is a deficient number, since it is larger than the sum of its proper divisors (4676849).

28645351 is an equidigital number, since it uses as much as digits as its factorization.

28645351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584613 (or 584606 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 28645351 is about 5352.1351814019. The cubic root of 28645351 is about 305.9741352539.

The spelling of 28645351 in words is "twenty-eight million, six hundred forty-five thousand, three hundred fifty-one".