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1020696285 = 3579720917
BaseRepresentation
bin111100110101101…
…001011011011101
32122010121202002010
4330311221123131
54042244240120
6245141021433
734202526630
oct7465513335
92563552063
101020696285
1148417a254
122459b4879
131336054cb
14997b7c17
155e91d7e0
hex3cd696dd

1020696285 has 16 divisors (see below), whose sum is σ = 1866416256. Its totient is φ = 466603968.

The previous prime is 1020696263. The next prime is 1020696301. The reversal of 1020696285 is 5826960201.

It is not a de Polignac number, because 1020696285 - 216 = 1020630749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4860354 + ... + 4860563.

It is an arithmetic number, because the mean of its divisors is an integer number (116651016).

Almost surely, 21020696285 is an apocalyptic number.

1020696285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020696285 is a deficient number, since it is larger than the sum of its proper divisors (845719971).

1020696285 is an equidigital number, since it uses as much as digits as its factorization.

1020696285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9720932.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1020696285 is about 31948.3377501866. The cubic root of 1020696285 is about 1006.8517085369.

It can be divided in two parts, 10206 and 96285, that added together give a triangular number (106491 = T461).

The spelling of 1020696285 in words is "one billion, twenty million, six hundred ninety-six thousand, two hundred eighty-five".

Divisors: 1 3 5 7 15 21 35 105 9720917 29162751 48604585 68046419 145813755 204139257 340232095 1020696285