28396455 has 16 divisors (see below), whose sum is σ = 45602784. Its totient is φ = 15088640.

The previous prime is 28396451. The next prime is 28396463. The reversal of 28396455 is 55469382.

It is not a de Polignac number, because 28396455 - 2² = 28396451 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28396451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847 + ... + 7583.

It is an arithmetic number, because the mean of its divisors is an integer number (2850174).

Almost surely, 2^28396455 is an apocalyptic number.

28396455 is a deficient number, since it is larger than the sum of its proper divisors (17206329).

28396455 is a wasteful number, since it uses less digits than its factorization.

28396455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026.

The product of its digits is 259200, while the sum is 42.

The square root of 28396455 is about 5328.8324237116. The cubic root of 28396455 is about 305.0853653375.

The spelling of 28396455 in words is "twenty-eight million, three hundred ninety-six thousand, four hundred fifty-five".