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1020822260 = 22551041113
BaseRepresentation
bin111100110110001…
…000001011110100
32122010212010212212
4330312020023310
54042312303020
6245143432552
734203563123
oct7466101364
92563763785
101020822260
11484255967
12245a55758
1313364a953
149980baba
155e945cc5
hex3cd882f4

1020822260 has 12 divisors (see below), whose sum is σ = 2143726788. Its totient is φ = 408328896.

The previous prime is 1020822259. The next prime is 1020822263. The reversal of 1020822260 is 622280201.

1020822260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 275095396 + 745726864 = 16586^2 + 27308^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020822263) 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, 25520537 + ... + 25520576.

It is an arithmetic number, because the mean of its divisors is an integer number (178643899).

Almost surely, 21020822260 is an apocalyptic number.

1020822260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020822260 is an abundant number, since it is smaller than the sum of its proper divisors (1122904528).

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

1020822260 is a wasteful number, since it uses less digits than its factorization.

1020822260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51041122 (or 51041120 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1020822260 is about 31950.3092316804. The cubic root of 1020822260 is about 1006.8931289307.

The spelling of 1020822260 in words is "one billion, twenty million, eight hundred twenty-two thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 51041113 102082226 204164452 255205565 510411130 1020822260