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2020402220 = 225101020111
BaseRepresentation
bin111100001101100…
…1110010000101100
312012210202001210212
41320123032100230
513114210332340
6532252121552
7101032064324
oct17033162054
95183661725
102020402220
11947512101
124847662b8
1326276b895
1415248a284
15bc592a65
hex786ce42c

2020402220 has 12 divisors (see below), whose sum is σ = 4242844704. Its totient is φ = 808160880.

The previous prime is 2020402217. The next prime is 2020402229. The reversal of 2020402220 is 222040202.

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 = 2020402195 and 2020402204.

It is not an unprimeable number, because it can be changed into a prime (2020402229) 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, 50510036 + ... + 50510075.

It is an arithmetic number, because the mean of its divisors is an integer number (353570392).

Almost surely, 22020402220 is an apocalyptic number.

2020402220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020402220 is an abundant number, since it is smaller than the sum of its proper divisors (2222442484).

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

2020402220 is a wasteful number, since it uses less digits than its factorization.

2020402220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101020120 (or 101020118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2020402220 is about 44948.8845245352. The cubic root of 2020402220 is about 1264.1907617807.

Adding to 2020402220 its reverse (222040202), we get a palindrome (2242442422).

The spelling of 2020402220 in words is "two billion, twenty million, four hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 101020111 202040222 404080444 505100555 1010201110 2020402220