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3122020 = 2251123617
BaseRepresentation
bin1011111010001101100100
312212121121101
423322031210
51244401040
6150525444
735352046
oct13721544
95777541
103122020
111842690
121066884
13854065
145b3a96
1541a09a
hex2fa364

3122020 has 48 divisors (see below), whose sum is σ = 7475328. Its totient is φ = 1084160.

The previous prime is 3122017. The next prime is 3122059. The reversal of 3122020 is 202213.

3122020 = T1115 + T1116 + ... + T1119.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 3121988 and 3122006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4752 + ... + 5368.

It is an arithmetic number, because the mean of its divisors is an integer number (155736).

Almost surely, 23122020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3737664).

3122020 is an abundant number, since it is smaller than the sum of its proper divisors (4353308).

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

3122020 is a wasteful number, since it uses less digits than its factorization.

3122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 3122020 is about 1766.9238806468. The cubic root of 3122020 is about 146.1543997422.

Adding to 3122020 its reverse (202213), we get a palindrome (3324233).

It can be divided in two parts, 312 and 2020, that added together give a palindrome (2332).

The spelling of 3122020 in words is "three million, one hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 23 44 46 55 92 110 115 220 230 253 460 506 617 1012 1234 1265 2468 2530 3085 5060 6170 6787 12340 13574 14191 27148 28382 33935 56764 67870 70955 135740 141910 156101 283820 312202 624404 780505 1561010 3122020