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20275314887 = 419129737309
BaseRepresentation
bin10010111000100000…
…001100000011000111
31221100000120201021102
4102320200030003013
5313010440034022
613151522210315
71315304222132
oct227040140307
957300521242
1020275314887
118664983193
123b1a1b399b
131bb1741959
14da4ab1219
157da000a92
hex4b880c0c7

20275314887 has 8 divisors (see below), whose sum is σ = 20339919600. Its totient is φ = 20210788224.

The previous prime is 20275314859. The next prime is 20275314901. The reversal of 20275314887 is 78841357202.

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

It is a cyclic number.

It is not a de Polignac number, because 20275314887 - 230 = 19201573063 is a prime.

It is a super-2 number, since 2×202753148872 (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 (20275314287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524789 + ... + 562097.

It is an arithmetic number, because the mean of its divisors is an integer number (2542489950).

Almost surely, 220275314887 is an apocalyptic number.

20275314887 is a deficient number, since it is larger than the sum of its proper divisors (64604713).

20275314887 is a wasteful number, since it uses less digits than its factorization.

20275314887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39025.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 20275314887 in words is "twenty billion, two hundred seventy-five million, three hundred fourteen thousand, eight hundred eighty-seven".

Divisors: 1 419 1297 37309 543443 15632471 48389773 20275314887