28858097 has 4 divisors (see below), whose sum is σ = 29017716. Its totient is φ = 28698480.

The previous prime is 28858087. The next prime is 28858111. The reversal of 28858097 is 79085882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3041536 + 25816561 = 1744^2 + 5081^2 .

It is a cyclic number.

It is not a de Polignac number, because 28858097 - 2⁸ = 28857841 is a prime.

It is a super-2 number, since 2×28858097² = 1665579524922818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28858057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79538 + ... + 79899.

It is an arithmetic number, because the mean of its divisors is an integer number (7254429).

Almost surely, 2^28858097 is an apocalyptic number.

It is an amenable number.

28858097 is a deficient number, since it is larger than the sum of its proper divisors (159619).

28858097 is a wasteful number, since it uses less digits than its factorization.

28858097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159618.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 28858097 is about 5371.9732873498. The cubic root of 28858097 is about 306.7297469219.

It can be divided in two parts, 288 and 58097, that added together give a palindrome (58385).

The spelling of 28858097 in words is "twenty-eight million, eight hundred fifty-eight thousand, ninety-seven".