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20415500002 = 228181362221
BaseRepresentation
bin10011000000110110…
…111100111011100010
31221200210100212002201
4103000312330323202
5313302332000002
613213451003414
71321625613112
oct230066747342
957623325081
1020415500002
118727021357
123b5913956a
131c047b5321
14db9563042
157e7492087
hex4c0dbcee2

20415500002 has 8 divisors (see below), whose sum is σ = 30624421212. Its totient is φ = 10207359600.

The previous prime is 20415499987. The next prime is 20415500003. The reversal of 20415500002 is 20000551402.

It can be written as a sum of positive squares in 2 ways, for example, as 20414980161 + 519841 = 142881^2 + 721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20415500003) 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, 124749 + ... + 237472.

Almost surely, 220415500002 is an apocalyptic number.

20415500002 is a deficient number, since it is larger than the sum of its proper divisors (10208921210).

20415500002 is a wasteful number, since it uses less digits than its factorization.

20415500002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390404.

The product of its (nonzero) digits is 400, while the sum is 19.

The spelling of 20415500002 in words is "twenty billion, four hundred fifteen million, five hundred thousand, two".

Divisors: 1 2 28181 56362 362221 724442 10207750001 20415500002