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28630224205 = 511520549531
BaseRepresentation
bin11010101010011111…
…101000110101001101
32201220021211002020021
4122222133220311031
5432113314133310
621052541022141
72032324614262
oct325237506515
981807732207
1028630224205
1111162019220
125670254951
13291366968b
141558563269
15b287545da
hex6aa7e8d4d

28630224205 has 8 divisors (see below), whose sum is σ = 37479566304. Its totient is φ = 20821981200.

The previous prime is 28630224199. The next prime is 28630224209. The reversal of 28630224205 is 50242203682.

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

It is not a de Polignac number, because 28630224205 - 23 = 28630224197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28630224209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260274711 + ... + 260274820.

It is an arithmetic number, because the mean of its divisors is an integer number (4684945788).

Almost surely, 228630224205 is an apocalyptic number.

It is an amenable number.

28630224205 is a deficient number, since it is larger than the sum of its proper divisors (8849342099).

28630224205 is a wasteful number, since it uses less digits than its factorization.

28630224205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520549547.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 28630224205 its reverse (50242203682), we get a palindrome (78872427887).

The spelling of 28630224205 in words is "twenty-eight billion, six hundred thirty million, two hundred twenty-four thousand, two hundred five".

Divisors: 1 5 11 55 520549531 2602747655 5726044841 28630224205