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8022020 = 225401101
BaseRepresentation
bin11110100110100000000100
3120002120010212
4132212200010
54023201040
6443534552
7125120546
oct36464004
916076125
108022020
11458a076
12282a458
13187b476
1410cb696
15a86d65
hex7a6804

8022020 has 12 divisors (see below), whose sum is σ = 16846284. Its totient is φ = 3208800.

The previous prime is 8022017. The next prime is 8022029. The reversal of 8022020 is 202208.

Adding to 8022020 its reverse (202208), we get a palindrome (8224228).

It can be written as a sum of positive squares in 2 ways, for example, as 1478656 + 6543364 = 1216^2 + 2558^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8021986 and 8022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8022029) 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, 200531 + ... + 200570.

It is an arithmetic number, because the mean of its divisors is an integer number (1403857).

Almost surely, 28022020 is an apocalyptic number.

It is an amenable number.

8022020 is an abundant number, since it is smaller than the sum of its proper divisors (8824264).

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

8022020 is a wasteful number, since it uses less digits than its factorization.

8022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401110 (or 401108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 8022020 is about 2832.3170726456. The cubic root of 8022020 is about 200.1833318957.

The spelling of 8022020 in words is "eight million, twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 401101 802202 1604404 2005505 4011010 8022020