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20014401512 = 2371721023531
BaseRepresentation
bin10010101000111100…
…111000011111101000
31220122211121221102002
4102220330320133220
5311442141322022
613110002030132
71305655414550
oct225074703750
956584557362
1020014401512
1185406760a6
123a66948348
131b6c67aa41
14d7c194160
157c2163092
hex4a8f387e8

20014401512 has 32 divisors (see below), whose sum is σ = 45410829120. Its totient is φ = 8073035520.

The previous prime is 20014401481. The next prime is 20014401553. The reversal of 20014401512 is 21510441002.

It is a happy number.

It is a super-2 number, since 2×200144015122 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10510814 + ... + 10512717.

It is an arithmetic number, because the mean of its divisors is an integer number (1419088410).

Almost surely, 220014401512 is an apocalyptic number.

It is an amenable number.

20014401512 is an abundant number, since it is smaller than the sum of its proper divisors (25396427608).

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

20014401512 is a wasteful number, since it uses less digits than its factorization.

20014401512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21023561 (or 21023557 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20014401512 its reverse (21510441002), we get a palindrome (41524842514).

The spelling of 20014401512 in words is "twenty billion, fourteen million, four hundred one thousand, five hundred twelve".

Divisors: 1 2 4 7 8 14 17 28 34 56 68 119 136 238 476 952 21023531 42047062 84094124 147164717 168188248 294329434 357400027 588658868 714800054 1177317736 1429600108 2501800189 2859200216 5003600378 10007200756 20014401512