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1068788420 = 22577634203
BaseRepresentation
bin111111101101000…
…110101011000100
32202111010002002022
4333231012223010
54142102212140
6254015502312
735325360140
oct7755065304
92674102068
101068788420
114a9337617
12259b27998
131405733ab
14a1d36220
1563c6d0b5
hex3fb46ac4

1068788420 has 24 divisors (see below), whose sum is σ = 2565092544. Its totient is φ = 366441696.

The previous prime is 1068788377. The next prime is 1068788429. The reversal of 1068788420 is 248878601.

It is a super-2 number, since 2×10687884202 = 2284617373452192800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1068788429) 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, 3816962 + ... + 3817241.

It is an arithmetic number, because the mean of its divisors is an integer number (106878856).

Almost surely, 21068788420 is an apocalyptic number.

1068788420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1068788420 is an abundant number, since it is smaller than the sum of its proper divisors (1496304124).

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

1068788420 is a wasteful number, since it uses less digits than its factorization.

1068788420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634219 (or 7634217 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 1068788420 is about 32692.3296814406. The cubic root of 1068788420 is about 1022.4229276580.

The spelling of 1068788420 in words is "one billion, sixty-eight million, seven hundred eighty-eight thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 7634203 15268406 30536812 38171015 53439421 76342030 106878842 152684060 213757684 267197105 534394210 1068788420