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20764186060 = 2251815735963
BaseRepresentation
bin10011010101101001…
…000101010111001100
31222121002110221110011
4103111221011113030
5320011112423220
613312224323004
71333361445412
oct232551052714
958532427404
1020764186060
118895929352
124035a73464
131c5bacb437
14100d9ab2b2
15817dbb65a
hex4d5a455cc

20764186060 has 24 divisors (see below), whose sum is σ = 43845708816. Its totient is φ = 8259785280.

The previous prime is 20764186057. The next prime is 20764186061. The reversal of 20764186060 is 6068146702.

It is not an unprimeable number, because it can be changed into a prime (20764186061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2864362 + ... + 2871601.

It is an arithmetic number, because the mean of its divisors is an integer number (1826904534).

Almost surely, 220764186060 is an apocalyptic number.

20764186060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20764186060 is an abundant number, since it is smaller than the sum of its proper divisors (23081522756).

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

20764186060 is a wasteful number, since it uses less digits than its factorization.

20764186060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736153 (or 5736151 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20764186060 in words is "twenty billion, seven hundred sixty-four million, one hundred eighty-six thousand, sixty".

Divisors: 1 2 4 5 10 20 181 362 724 905 1810 3620 5735963 11471926 22943852 28679815 57359630 114719260 1038209303 2076418606 4152837212 5191046515 10382093030 20764186060