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420805772086 = 2730057555149
BaseRepresentation
bin1100001111110011111…
…10101000001100110110
31111020011200022002202011
412013321332220030312
523343302234201321
6521152052034434
742254650021450
oct6077176501466
91436150262664
10420805772086
1115250a984967
126967b002a1a
13308b2c3a19b
141651d4b72d0
15ae2d27bae1
hex61f9fa8336

420805772086 has 8 divisors (see below), whose sum is σ = 721381323600. Its totient is φ = 180345330888.

The previous prime is 420805772081. The next prime is 420805772113. The reversal of 420805772086 is 680277508024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420805772081) 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, 15028777561 + ... + 15028777588.

It is an arithmetic number, because the mean of its divisors is an integer number (90172665450).

Almost surely, 2420805772086 is an apocalyptic number.

420805772086 is a deficient number, since it is larger than the sum of its proper divisors (300575551514).

420805772086 is a wasteful number, since it uses less digits than its factorization.

420805772086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30057555158.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 420805772086 in words is "four hundred twenty billion, eight hundred five million, seven hundred seventy-two thousand, eighty-six".

Divisors: 1 2 7 14 30057555149 60115110298 210402886043 420805772086