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20132030220 = 22351312561327
BaseRepresentation
bin10010101111111101…
…100110011100001100
31220222000222002122220
4102233331212130030
5312212244431340
613125403135340
71311614301441
oct225775463414
956860862586
1020132030220
1185a1008305
123a9a214550
131b8ab54523
14d8da539c8
157cc64aed0
hex4aff6670c

20132030220 has 48 divisors (see below), whose sum is σ = 56800009728. Its totient is φ = 5327558080.

The previous prime is 20132030201. The next prime is 20132030227. The reversal of 20132030220 is 2203023102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20132030220.

It is not an unprimeable number, because it can be changed into a prime (20132030227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272804 + ... + 1288523.

It is an arithmetic number, because the mean of its divisors is an integer number (1183333536).

Almost surely, 220132030220 is an apocalyptic number.

20132030220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20132030220 is an abundant number, since it is smaller than the sum of its proper divisors (36667979508).

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

20132030220 is a wasteful number, since it uses less digits than its factorization.

20132030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561470 (or 2561468 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20132030220 its reverse (2203023102), we get a palindrome (22335053322).

It can be divided in two parts, 201320 and 30220, that added together give a triangular number (231540 = T680).

The spelling of 20132030220 in words is "twenty billion, one hundred thirty-two million, thirty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 131 262 393 524 655 786 1310 1572 1965 2620 3930 7860 2561327 5122654 7683981 10245308 12806635 15367962 25613270 30735924 38419905 51226540 76839810 153679620 335533837 671067674 1006601511 1342135348 1677669185 2013203022 3355338370 4026406044 5033007555 6710676740 10066015110 20132030220