Search a number
-
+
28418685995 = 57911891287
BaseRepresentation
bin11010011101111000…
…101011110000101011
32201100112202211100202
4122131320223300223
5431200140422440
621015543022415
72024145562640
oct323570536053
981315684322
1028418685995
1111063675457
12561143aa0b
1328ab8a263b
141538419dc7
15b14dbb615
hex69de2bc2b

28418685995 has 16 divisors (see below), whose sum is σ = 39017023488. Its totient is φ = 19465686240.

The previous prime is 28418685991. The next prime is 28418686013. The reversal of 28418685995 is 59958681482.

It is not a de Polignac number, because 28418685995 - 22 = 28418685991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28418685991) 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, 413759 + ... + 477528.

It is an arithmetic number, because the mean of its divisors is an integer number (2438563968).

Almost surely, 228418685995 is an apocalyptic number.

28418685995 is a deficient number, since it is larger than the sum of its proper divisors (10598337493).

28418685995 is an equidigital number, since it uses as much as digits as its factorization.

28418685995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892210.

The product of its digits is 49766400, while the sum is 65.

The spelling of 28418685995 in words is "twenty-eight billion, four hundred eighteen million, six hundred eighty-five thousand, nine hundred ninety-five".

Divisors: 1 5 7 35 911 4555 6377 31885 891287 4456435 6239009 31195045 811962457 4059812285 5683737199 28418685995