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2215980032 = 21071953307
BaseRepresentation
bin1000010000010101…
…0010110000000000
312201102202110010112
42010011102300000
514014242330112
61003520050452
7105625343120
oct20405226000
95642673115
102215980032
11a37954662
1251a163a28
132941380b6
1417043ac80
15ce826a22
hex84152c00

2215980032 has 176 divisors, whose sum is σ = 5447312640. Its totient is φ = 879869952.

The previous prime is 2215980031. The next prime is 2215980047. The reversal of 2215980032 is 2300895122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (2215980031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7218023 + ... + 7218329.

It is an arithmetic number, because the mean of its divisors is an integer number (30950640).

Almost surely, 22215980032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215980032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2723656320).

2215980032 is an abundant number, since it is smaller than the sum of its proper divisors (3231332608).

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

2215980032 is a wasteful number, since it uses less digits than its factorization.

2215980032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2215980032 is about 47074.1970935246. The cubic root of 2215980032 is about 1303.7328671060.

The spelling of 2215980032 in words is "two billion, two hundred fifteen million, nine hundred eighty thousand, thirty-two".