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22231500000 = 2535614821
BaseRepresentation
bin10100101101000110…
…011100010011100000
32010101100111012202220
4110231012130103200
5331012231000000
614114002111040
71414626426543
oct245506342340
963340435686
1022231500000
119479113aa6
12438534b480
132133ab7c38
14110c80285a
158a1b0b1a0
hex52d19c4e0

22231500000 has 168 divisors, whose sum is σ = 72951097464. Its totient is φ = 5928000000.

The previous prime is 22231499957. The next prime is 22231500001. The reversal of 22231500000 is 513222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231500001) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1492590 + ... + 1507410.

It is an arithmetic number, because the mean of its divisors is an integer number (434232723).

Almost surely, 222231500000 is an apocalyptic number.

22231500000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22231500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36475548732).

22231500000 is an abundant number, since it is smaller than the sum of its proper divisors (50719597464).

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

22231500000 is an frugal number, since it uses more digits than its factorization.

22231500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864 (or 14831 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The spelling of 22231500000 in words is "twenty-two billion, two hundred thirty-one million, five hundred thousand".