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10221914880 = 28345195189
BaseRepresentation
bin10011000010100011…
…00000101100000000
3222101101100002010000
421201101200230000
5131413302234010
64410151040000
7511210562052
oct114121405400
928341302100
1010221914880
114376005a41
121b93370000
13c6b978658
146cd80b8d2
153ec5e57c0
hex261460b00

10221914880 has 360 divisors, whose sum is σ = 38508346800. Its totient is φ = 2581880832.

The previous prime is 10221914873. The next prime is 10221914881. The reversal of 10221914880 is 8841912201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221914881) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1967326 + ... + 1972514.

It is an arithmetic number, because the mean of its divisors is an integer number (106967630).

Almost surely, 210221914880 is an apocalyptic number.

10221914880 is a gapful number since it is divisible by the number (10) 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 10221914880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19254173400).

10221914880 is an abundant number, since it is smaller than the sum of its proper divisors (28286431920).

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

10221914880 is an equidigital number, since it uses as much as digits as its factorization.

10221914880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 10221914880 in words is "ten billion, two hundred twenty-one million, nine hundred fourteen thousand, eight hundred eighty".