Search a number
-
+
2280919680 = 273251383367
BaseRepresentation
bin1000011111110100…
…0001001010000000
312212221221201120200
42013331001022000
514132403412210
61014200005200
7110344332414
oct20775011200
95787851520
102280919680
11a70579796
12537a60800
132a4724520
14178d02d44
15d53a30c0
hex87f41280

2280919680 has 384 divisors, whose sum is σ = 8607755520. Its totient is φ = 553181184.

The previous prime is 2280919673. The next prime is 2280919757. The reversal of 2280919680 is 869190822.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×22809196802 = 10405189173222604800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6214857 + ... + 6215223.

It is an arithmetic number, because the mean of its divisors is an integer number (22416030).

Almost surely, 22280919680 is an apocalyptic number.

2280919680 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 2280919680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4303877760).

2280919680 is an abundant number, since it is smaller than the sum of its proper divisors (6326835840).

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

2280919680 is a wasteful number, since it uses less digits than its factorization.

2280919680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2280919680 is about 47758.9748633699. The cubic root of 2280919680 is about 1316.3458162460.

The spelling of 2280919680 in words is "two billion, two hundred eighty million, nine hundred nineteen thousand, six hundred eighty".