Search a number
-
+
22131026480 = 245318923801
BaseRepresentation
bin10100100111000111…
…001010101000110000
32010010100102122000102
4110213013022220300
5330311020321410
614100012411532
71412266423043
oct244707125060
963110378012
1022131026480
119427429832
124357776ba8
132119039a54
1410dd32ac5a
15897db12a5
hex5271caa30

22131026480 has 40 divisors (see below), whose sum is σ = 53114469504. Its totient is φ = 8566848000.

The previous prime is 22131026429. The next prime is 22131026507. The reversal of 22131026480 is 8462013122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×221310264802 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4459421 + ... + 4464380.

Almost surely, 222131026480 is an apocalyptic number.

22131026480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131026480 is an abundant number, since it is smaller than the sum of its proper divisors (30983443024).

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

22131026480 is a wasteful number, since it uses less digits than its factorization.

22131026480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923845 (or 8923839 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 22131026480 in words is "twenty-two billion, one hundred thirty-one million, twenty-six thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 31 40 62 80 124 155 248 310 496 620 1240 2480 8923801 17847602 35695204 44619005 71390408 89238010 142780816 178476020 276637831 356952040 553275662 713904080 1106551324 1383189155 2213102648 2766378310 4426205296 5532756620 11065513240 22131026480