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3020131220 = 225928316267
BaseRepresentation
bin1011010000000011…
…1000101110010100
321210110220120011212
42310000320232110
522141123144340
61215403520552
7134561456201
oct26400705624
97713816155
103020131220
11130a870317
12703529158
133919125c2
14209166ca8
1512a21da65
hexb4038b94

3020131220 has 24 divisors (see below), whose sum is σ = 6343348704. Its totient is φ = 1207848096.

The previous prime is 3020131199. The next prime is 3020131229. The reversal of 3020131220 is 221310203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3020131195 and 3020131204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020131229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177527 + ... + 193793.

It is an arithmetic number, because the mean of its divisors is an integer number (264306196).

Almost surely, 23020131220 is an apocalyptic number.

It is an amenable number.

3020131220 is an abundant number, since it is smaller than the sum of its proper divisors (3323217484).

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

3020131220 is a wasteful number, since it uses less digits than its factorization.

3020131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25559 (or 25557 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3020131220 is about 54955.7205393579. The cubic root of 3020131220 is about 1445.4684081483.

Adding to 3020131220 its reverse (221310203), we get a palindrome (3241441423).

The spelling of 3020131220 in words is "three billion, twenty million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 9283 16267 18566 32534 37132 46415 65068 81335 92830 162670 185660 325340 151006561 302013122 604026244 755032805 1510065610 3020131220