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20333202220 = 2258312248917
BaseRepresentation
bin10010111011111101…
…000000101100101100
31221111001111200202201
4102323331000230230
5313120244432340
613201351031244
71316606236642
oct227375005454
957431450681
1020333202220
118694620861
123b3566b524
131bc072c106
14dac65d192
157e013779a
hex4bbf40b2c

20333202220 has 24 divisors (see below), whose sum is σ = 43214182704. Its totient is φ = 8035288896.

The previous prime is 20333202191. The next prime is 20333202247. The reversal of 20333202220 is 2220233302.

It is a super-2 number, since 2×203332022202 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6122799 + ... + 6126118.

It is an arithmetic number, because the mean of its divisors is an integer number (1800590946).

Almost surely, 220333202220 is an apocalyptic number.

20333202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20333202220 is an abundant number, since it is smaller than the sum of its proper divisors (22880980484).

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

20333202220 is a wasteful number, since it uses less digits than its factorization.

20333202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12249009 (or 12249007 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 20333202220 its reverse (2220233302), we get a palindrome (22553435522).

The spelling of 20333202220 in words is "twenty billion, three hundred thirty-three million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1660 12248917 24497834 48995668 61244585 122489170 244978340 1016660111 2033320222 4066640444 5083300555 10166601110 20333202220