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2190213468 = 223260839263
BaseRepresentation
bin1000001010001100…
…0000000101011100
312122122021101001100
42002203000011130
513441143312333
61001155513100
7105163336002
oct20243000534
95578241040
102190213468
11a24355883
125115b8790
1328b9b6001
1416ac50a72
15cc437213
hex828c015c

2190213468 has 18 divisors (see below), whose sum is σ = 5536373024. Its totient is φ = 730071144.

The previous prime is 2190213461. The next prime is 2190213491. The reversal of 2190213468 is 8643120912.

2190213468 is a `hidden beast` number, since 2 + 190 + 2 + 1 + 3 + 468 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 60839263 = 2190213468 / (2 + 1 + 9 + 0 + 2 + 1 + 3 + 4 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190213461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30419596 + ... + 30419667.

Almost surely, 22190213468 is an apocalyptic number.

It is an amenable number.

2190213468 is an abundant number, since it is smaller than the sum of its proper divisors (3346159556).

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

2190213468 is a wasteful number, since it uses less digits than its factorization.

2190213468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60839273 (or 60839268 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2190213468 is about 46799.7165376031. The cubic root of 2190213468 is about 1298.6600528833.

The spelling of 2190213468 in words is "two billion, one hundred ninety million, two hundred thirteen thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 60839263 121678526 182517789 243357052 365035578 547553367 730071156 1095106734 2190213468