28618058 has 12 divisors (see below), whose sum is σ = 49935762. Its totient is φ = 12264840.

The previous prime is 28618043. The next prime is 28618061. The reversal of 28618058 is 85081682.

It can be written as a sum of positive squares in only one way, i.e., 25331089 + 3286969 = 5033^2 + 1813^2 .

It is a super-3 number, since 3×28618058³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 145913 + ... + 146108.

Almost surely, 2^28618058 is an apocalyptic number.

28618058 is a deficient number, since it is larger than the sum of its proper divisors (21317704).

28618058 is a wasteful number, since it uses less digits than its factorization.

28618058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292037 (or 292030 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 28618058 is about 5349.5848437052. The cubic root of 28618058 is about 305.8769280233.

The spelling of 28618058 in words is "twenty-eight million, six hundred eighteen thousand, fifty-eight".