28611395 has 4 divisors (see below), whose sum is σ = 34333680. Its totient is φ = 22889112.

The previous prime is 28611377. The next prime is 28611403. The reversal of 28611395 is 59311682.

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

It is a cyclic number.

It is not a de Polignac number, because 28611395 - 2¹⁶ = 28545859 is a prime.

It is a super-2 number, since 2×28611395² = 1637223847692050, which contains 22 as substring.

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, 2861135 + ... + 2861144.

It is an arithmetic number, because the mean of its divisors is an integer number (8583420).

Almost surely, 2^28611395 is an apocalyptic number.

28611395 is a deficient number, since it is larger than the sum of its proper divisors (5722285).

28611395 is an equidigital number, since it uses as much as digits as its factorization.

28611395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722284.

The product of its digits is 12960, while the sum is 35.

The square root of 28611395 is about 5348.9620488465. The cubic root of 28611395 is about 305.8531875799.

The spelling of 28611395 in words is "twenty-eight million, six hundred eleven thousand, three hundred ninety-five".