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4872021 = 3721123131
BaseRepresentation
bin10010100101011101010101
3100011112011020
4102211131111
52221401041
6252231353
756261100
oct22453525
910145136
104872021
112828470
12176b559
13101776b
1490b737
15663866
hex4a5755

4872021 has 48 divisors (see below), whose sum is σ = 8667648. Its totient is φ = 2402400.

The previous prime is 4872001. The next prime is 4872041. The reversal of 4872021 is 1202784.

It is an interprime number because it is at equal distance from previous prime (4872001) and next prime (4872041).

It is not a de Polignac number, because 4872021 - 26 = 4871957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4871982 and 4872000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4872001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37126 + ... + 37256.

It is an arithmetic number, because the mean of its divisors is an integer number (180576).

Almost surely, 24872021 is an apocalyptic number.

It is an amenable number.

4872021 is a deficient number, since it is larger than the sum of its proper divisors (3795627).

4872021 is a wasteful number, since it uses less digits than its factorization.

4872021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 4872021 is about 2207.2655028338. The cubic root of 4872021 is about 169.5260269289.

The spelling of 4872021 in words is "four million, eight hundred seventy-two thousand, twenty-one".

Divisors: 1 3 7 11 21 23 33 49 69 77 131 147 161 231 253 393 483 539 759 917 1127 1441 1617 1771 2751 3013 3381 4323 5313 6419 9039 10087 12397 19257 21091 30261 33143 37191 63273 70609 99429 147637 211827 232001 442911 696003 1624007 4872021