28449255 has 8 divisors (see below), whose sum is σ = 45518832. Its totient is φ = 15172928.

The previous prime is 28449233. The next prime is 28449277. The reversal of 28449255 is 55294482.

It is an interprime number because it is at equal distance from previous prime (28449233) and next prime (28449277).

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

It is a cyclic number.

It is not a de Polignac number, because 28449255 - 2⁶ = 28449191 is a prime.

It is a super-2 number, since 2×28449255² = 1618720220110050, 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 7 ways as a sum of consecutive naturals, for example, 948294 + ... + 948323.

It is an arithmetic number, because the mean of its divisors is an integer number (5689854).

Almost surely, 2^28449255 is an apocalyptic number.

28449255 is a deficient number, since it is larger than the sum of its proper divisors (17069577).

28449255 is a wasteful number, since it uses less digits than its factorization.

28449255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896625.

The product of its digits is 115200, while the sum is 39.

The square root of 28449255 is about 5333.7843038503. The cubic root of 28449255 is about 305.2743388509.

The spelling of 28449255 in words is "twenty-eight million, four hundred forty-nine thousand, two hundred fifty-five".