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23304232220 = 2251165211611
BaseRepresentation
bin10101101101000010…
…100101110100011100
32020011010000122201212
4111231002211310130
5340211340412340
614412242323552
71453333463663
oct255502456434
966133018655
1023304232220
1199796a4655
1246246595b8
13227510c429
1411b1083dda
15915da7a65
hex56d0a5d1c

23304232220 has 12 divisors (see below), whose sum is σ = 48938887704. Its totient is φ = 9321692880.

The previous prime is 23304232183. The next prime is 23304232229. The reversal of 23304232220 is 2223240332.

It is a super-2 number, since 2×233042322202 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23304232229) 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 3 ways as a sum of consecutive naturals, for example, 582605786 + ... + 582605825.

It is an arithmetic number, because the mean of its divisors is an integer number (4078240642).

Almost surely, 223304232220 is an apocalyptic number.

23304232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23304232220 is an abundant number, since it is smaller than the sum of its proper divisors (25634655484).

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

23304232220 is a wasteful number, since it uses less digits than its factorization.

23304232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165211620 (or 1165211618 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 23304232220 its reverse (2223240332), we get a palindrome (25527472552).

The spelling of 23304232220 in words is "twenty-three billion, three hundred four million, two hundred thirty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1165211611 2330423222 4660846444 5826058055 11652116110 23304232220