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24311041220 = 2251215552061
BaseRepresentation
bin10110101001000011…
…010000110011000100
32022202021111212001002
4112221003100303010
5344242111304340
615100205552432
71520310304124
oct265103206304
968667455032
1024311041220
11a345a49104
124865875718
1323a58918bb
141268a84c84
15974481715
hex5a90d0cc4

24311041220 has 12 divisors (see below), whose sum is σ = 51053186604. Its totient is φ = 9724416480.

The previous prime is 24311041219. The next prime is 24311041319. The reversal of 24311041220 is 2214011342.

It can be written as a sum of positive squares in 2 ways, for example, as 5666777284 + 18644263936 = 75278^2 + 136544^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1215552061 = 24311041220 / (2 + 4 + 3 + 1 + 1 + 0 + 4 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 24311041192 and 24311041201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607776011 + ... + 607776050.

It is an arithmetic number, because the mean of its divisors is an integer number (4254432217).

Almost surely, 224311041220 is an apocalyptic number.

24311041220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24311041220 is an abundant number, since it is smaller than the sum of its proper divisors (26742145384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24311041220 is a wasteful number, since it uses less digits than its factorization.

24311041220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215552070 (or 1215552068 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 24311041220 its reverse (2214011342), we get a palindrome (26525052562).

The spelling of 24311041220 in words is "twenty-four billion, three hundred eleven million, forty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1215552061 2431104122 4862208244 6077760305 12155520610 24311041220