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20150354020 = 22531253112841
BaseRepresentation
bin10010110001000011…
…100000000001100100
31221000022110001012011
4102301003200001210
5312231442312040
613131300004004
71312226116546
oct226103400144
957008401164
1020150354020
118600393245
123aa4390604
131b9189ba04
14d92263696
157ce06a3ea
hex4b10e0064

20150354020 has 48 divisors (see below), whose sum is σ = 43701428736. Its totient is φ = 7796448000.

The previous prime is 20150354011. The next prime is 20150354033. The reversal of 20150354020 is 2045305102.

It is a junction number, because it is equal to n+sod(n) for n = 20150353982 and 20150354000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1562800 + ... + 1575640.

It is an arithmetic number, because the mean of its divisors is an integer number (910446432).

Almost surely, 220150354020 is an apocalyptic number.

20150354020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20150354020 is an abundant number, since it is smaller than the sum of its proper divisors (23551074716).

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

20150354020 is a wasteful number, since it uses less digits than its factorization.

20150354020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15412 (or 15410 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20150354020 its reverse (2045305102), we get a palindrome (22195659122).

The spelling of 20150354020 in words is "twenty billion, one hundred fifty million, three hundred fifty-four thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 2531 5062 10124 12655 12841 25310 25682 50620 51364 64205 78461 128410 156922 256820 313844 392305 398071 784610 796142 1569220 1592284 1990355 3980710 7961420 32500571 65001142 130002284 162502855 325005710 650011420 1007517701 2015035402 4030070804 5037588505 10075177010 20150354020