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2190220008 = 23391259167
BaseRepresentation
bin1000001010001100…
…0001101011101000
312122122021201000120
42002203001223220
513441144020013
61001200003240
7105163364034
oct20243015350
95578251016
102190220008
11a2435a789
12511600520
1328b9b8c92
1416ac531c4
15cc439123
hex828c1ae8

2190220008 has 16 divisors (see below), whose sum is σ = 5475550080. Its totient is φ = 730073328.

The previous prime is 2190219989. The next prime is 2190220009. The reversal of 2190220008 is 8000220912.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 91259167 = 2190220008 / (2 + 1 + 9 + 0 + 2 + 2 + 0 + 0 + 0 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 2190220008.

It is not an unprimeable number, because it can be changed into a prime (2190220009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45629560 + ... + 45629607.

It is an arithmetic number, because the mean of its divisors is an integer number (342221880).

Almost surely, 22190220008 is an apocalyptic number.

It is an amenable number.

2190220008 is an abundant number, since it is smaller than the sum of its proper divisors (3285330072).

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

2190220008 is a wasteful number, since it uses less digits than its factorization.

2190220008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91259176 (or 91259172 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2190220008 is about 46799.7864097690. The cubic root of 2190220008 is about 1298.6613454862.

The spelling of 2190220008 in words is "two billion, one hundred ninety million, two hundred twenty thousand, eight".

Divisors: 1 2 3 4 6 8 12 24 91259167 182518334 273777501 365036668 547555002 730073336 1095110004 2190220008