28049455 has 16 divisors (see below), whose sum is σ = 39196224. Its totient is φ = 18869760.

The previous prime is 28049449. The next prime is 28049477. The reversal of 28049455 is 55494082.

It is not a de Polignac number, because 28049455 - 2⁵ = 28049423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5706 + ... + 9415.

It is an arithmetic number, because the mean of its divisors is an integer number (2449764).

Almost surely, 2^28049455 is an apocalyptic number.

28049455 is a deficient number, since it is larger than the sum of its proper divisors (11146769).

28049455 is a wasteful number, since it uses less digits than its factorization.

28049455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15186.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 28049455 is about 5296.1736187553. The cubic root of 28049455 is about 303.8375712102.

The spelling of 28049455 in words is "twenty-eight million, forty-nine thousand, four hundred fifty-five".