28455911 has 8 divisors (see below), whose sum is σ = 31468944. Its totient is φ = 25513920.

The previous prime is 28455893. The next prime is 28455929. The reversal of 28455911 is 11955482.

It is an interprime number because it is at equal distance from previous prime (28455893) and next prime (28455929).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28455911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28455961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16916 + ... + 18521.

It is an arithmetic number, because the mean of its divisors is an integer number (3933618).

Almost surely, 2^28455911 is an apocalyptic number.

28455911 is a deficient number, since it is larger than the sum of its proper divisors (3013033).

28455911 is a wasteful number, since it uses less digits than its factorization.

28455911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35521.

The product of its digits is 14400, while the sum is 35.

The square root of 28455911 is about 5334.4082146008. The cubic root of 28455911 is about 305.2981443665.

The spelling of 28455911 in words is "twenty-eight million, four hundred fifty-five thousand, nine hundred eleven".