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20292282061 = 28037239487
BaseRepresentation
bin10010111001100000…
…111010011011001101
31221101012111201212021
4102321200322123031
5313024311011221
613153330010141
71315601360122
oct227140723315
957335451767
1020292282061
118673511947
123b23a16951
131bb51027bc
14da704a749
157db753041
hex4b983a6cd

20292282061 has 4 divisors (see below), whose sum is σ = 20299524352. Its totient is φ = 20285039772.

The previous prime is 20292282011. The next prime is 20292282071. The reversal of 20292282061 is 16028229202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20292282061 - 29 = 20292281549 is a prime.

It is a super-2 number, since 2×202922820612 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20292282001) 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, 3616941 + ... + 3622546.

It is an arithmetic number, because the mean of its divisors is an integer number (5074881088).

Almost surely, 220292282061 is an apocalyptic number.

It is an amenable number.

20292282061 is a deficient number, since it is larger than the sum of its proper divisors (7242291).

20292282061 is an equidigital number, since it uses as much as digits as its factorization.

20292282061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242290.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 20292282061 in words is "twenty billion, two hundred ninety-two million, two hundred eighty-two thousand, sixty-one".

Divisors: 1 2803 7239487 20292282061