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22980071 = 37621083
BaseRepresentation
bin101011110101…
…0010111100111
31121020111201202
41113222113213
521340330241
62140313115
7366220202
oct127522747
947214652
1022980071
1111a762a4
12784279b
1349b799a
1430a2939
15203dd9b
hex15ea5e7

22980071 has 4 divisors (see below), whose sum is σ = 23601192. Its totient is φ = 22358952.

The previous prime is 22980047. The next prime is 22980119. The reversal of 22980071 is 17008922.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22980071 - 214 = 22963687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22980011) 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, 310505 + ... + 310578.

It is an arithmetic number, because the mean of its divisors is an integer number (5900298).

Almost surely, 222980071 is an apocalyptic number.

22980071 is a deficient number, since it is larger than the sum of its proper divisors (621121).

22980071 is an equidigital number, since it uses as much as digits as its factorization.

22980071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621120.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 22980071 is about 4793.7533311592. The cubic root of 22980071 is about 284.3045359529.

Adding to 22980071 its reverse (17008922), we get a palindrome (39988993).

The spelling of 22980071 in words is "twenty-two million, nine hundred eighty thousand, seventy-one".

Divisors: 1 37 621083 22980071