28043495 has 4 divisors (see below), whose sum is σ = 33652200. Its totient is φ = 22434792.

The previous prime is 28043471. The next prime is 28043507. The reversal of 28043495 is 59434082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59434082 = 2 ⋅29717041.

It is a cyclic number.

It is not a de Polignac number, because 28043495 - 2¹² = 28039399 is a prime.

It is a super-2 number, since 2×28043495² = 1572875223630050, which contains 22 as substring.

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, 2804345 + ... + 2804354.

It is an arithmetic number, because the mean of its divisors is an integer number (8413050).

Almost surely, 2^28043495 is an apocalyptic number.

28043495 is a deficient number, since it is larger than the sum of its proper divisors (5608705).

28043495 is an equidigital number, since it uses as much as digits as its factorization.

28043495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608704.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28043495 is about 5295.6109184871. The cubic root of 28043495 is about 303.8160496964.

The spelling of 28043495 in words is "twenty-eight million, forty-three thousand, four hundred ninety-five".