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4772988 = 22321117709
BaseRepresentation
bin10010001101010001111100
322222111022100
4102031101330
52210213423
6250145100
755366263
oct22152174
98874270
104772988
112770020
121722190
13cb166c
148c35da
15644343
hex48d47c

4772988 has 72 divisors (see below), whose sum is σ = 13955760. Its totient is φ = 1359360.

The previous prime is 4772953. The next prime is 4772993. The reversal of 4772988 is 8892774.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6378 + ... + 7086.

It is an arithmetic number, because the mean of its divisors is an integer number (193830).

Almost surely, 24772988 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 4772988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6977880).

4772988 is an abundant number, since it is smaller than the sum of its proper divisors (9182772).

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

4772988 is a wasteful number, since it uses less digits than its factorization.

4772988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 742 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 4772988 is about 2184.7169153005. The cubic root of 4772988 is about 168.3695098102.

The spelling of 4772988 in words is "four million, seven hundred seventy-two thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 11 12 17 18 22 33 34 36 44 51 66 68 99 102 132 153 187 198 204 306 374 396 561 612 709 748 1122 1418 1683 2127 2244 2836 3366 4254 6381 6732 7799 8508 12053 12762 15598 23397 24106 25524 31196 36159 46794 48212 70191 72318 93588 108477 132583 140382 144636 216954 265166 280764 397749 433908 530332 795498 1193247 1590996 2386494 4772988