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2225378898 = 232111192
BaseRepresentation
bin1000010010100100…
…1001011001010010
312202002102221221200
42010221021121102
514024144111043
61004453332030
7106101260061
oct20451113122
95662387850
102225378898
11a42194116
12521337016
13296079162
141717a61d8
15d05817d3
hex84a49652

2225378898 has 18 divisors (see below), whose sum is σ = 4822087959. Its totient is φ = 741726252.

The previous prime is 2225378867. The next prime is 2225378899. The reversal of 2225378898 is 8988735222.

It is a happy number.

2225378898 is a `hidden beast` number, since 2 + 22 + 537 + 8 + 89 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1112689449 + 1112689449 = 33357^2 + 33357^2 .

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

It is an ABA number since it can be written as A⋅BA, here for A=2, B=33357.

It is a super-2 number, since 2×22253788982 = 9904622479327388808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2225378899) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 194583 + ... + 205701.

Almost surely, 22225378898 is an apocalyptic number.

2225378898 is an abundant number, since it is smaller than the sum of its proper divisors (2596709061).

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

2225378898 is an frugal number, since it uses more digits than its factorization.

2225378898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22246 (or 11124 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 2225378898 is about 47173.9218000793. The cubic root of 2225378898 is about 1305.5734864374.

The spelling of 2225378898 in words is "two billion, two hundred twenty-five million, three hundred seventy-eight thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 9 18 11119 22238 33357 66714 100071 200142 123632161 247264322 370896483 741792966 1112689449 2225378898