28660355 has 4 divisors (see below), whose sum is σ = 34392432. Its totient is φ = 22928280.

The previous prime is 28660349. The next prime is 28660363. The reversal of 28660355 is 55306682.

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

It is not a de Polignac number, because 28660355 - 2¹² = 28656259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2866031 + ... + 2866040.

It is an arithmetic number, because the mean of its divisors is an integer number (8598108).

Almost surely, 2^28660355 is an apocalyptic number.

28660355 is a deficient number, since it is larger than the sum of its proper divisors (5732077).

28660355 is an equidigital number, since it uses as much as digits as its factorization.

28660355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732076.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 28660355 is about 5353.5366814845. The cubic root of 28660355 is about 306.0275474652.

The spelling of 28660355 in words is "twenty-eight million, six hundred sixty thousand, three hundred fifty-five".