28652605 has 4 divisors (see below), whose sum is σ = 34383132. Its totient is φ = 22922080.

The previous prime is 28652593. The next prime is 28652623. The reversal of 28652605 is 50625682.

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 11363641 + 17288964 = 3371^2 + 4158^2 .

It is not a de Polignac number, because 28652605 - 2²¹ = 26555453 is a prime.

It is a Duffinian number.

It is a congruent 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, 2865256 + ... + 2865265.

It is an arithmetic number, because the mean of its divisors is an integer number (8595783).

Almost surely, 2^28652605 is an apocalyptic number.

It is an amenable number.

28652605 is a deficient number, since it is larger than the sum of its proper divisors (5730527).

28652605 is an equidigital number, since it uses as much as digits as its factorization.

28652605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730526.

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

The square root of 28652605 is about 5352.8128119709. The cubic root of 28652605 is about 305.9999608413. Note that the first 4 decimals are identical.

The spelling of 28652605 in words is "twenty-eight million, six hundred fifty-two thousand, six hundred five".