28453955 has 4 divisors (see below), whose sum is σ = 34144752. Its totient is φ = 22763160.

The previous prime is 28453933. The next prime is 28453979. The reversal of 28453955 is 55935482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55935482 = 2 ⋅27967741.

It is a de Polignac number, because none of the positive numbers 2^k-28453955 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845391 + ... + 2845400.

It is an arithmetic number, because the mean of its divisors is an integer number (8536188).

Almost surely, 2^28453955 is an apocalyptic number.

28453955 is a deficient number, since it is larger than the sum of its proper divisors (5690797).

28453955 is an equidigital number, since it uses as much as digits as its factorization.

28453955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690796.

The product of its digits is 216000, while the sum is 41.

The square root of 28453955 is about 5334.2248734001. The cubic root of 28453955 is about 305.2911490203.

The spelling of 28453955 in words is "twenty-eight million, four hundred fifty-three thousand, nine hundred fifty-five".