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2644628 = 2272103131
BaseRepresentation
bin1010000101101010010100
311222100202012
422011222110
51134112003
6132403352
731323200
oct12055224
94870665
102644628
111546a48
12a76558
1371798c
144cbb00
153738d8
hex285a94

2644628 has 36 divisors (see below), whose sum is σ = 5477472. Its totient is φ = 1113840.

The previous prime is 2644627. The next prime is 2644637. The reversal of 2644628 is 8264462.

It is a happy number.

It is a d-powerful number, because it can be written as 220 + 64 + 4 + 49 + 67 + 220 + 84 .

It is a junction number, because it is equal to n+sod(n) for n = 2644594 and 2644603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20123 + ... + 20253.

It is an arithmetic number, because the mean of its divisors is an integer number (152152).

22644628 is an apocalyptic number.

2644628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2644628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2738736).

2644628 is an abundant number, since it is smaller than the sum of its proper divisors (2832844).

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

2644628 is a wasteful number, since it uses less digits than its factorization.

2644628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 243 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 2644628 is about 1626.2312258716. The cubic root of 2644628 is about 138.2891786627.

The spelling of 2644628 in words is "two million, six hundred forty-four thousand, six hundred twenty-eight".

Divisors: 1 2 4 7 14 28 49 98 103 131 196 206 262 412 524 721 917 1442 1834 2884 3668 5047 6419 10094 12838 13493 20188 25676 26986 53972 94451 188902 377804 661157 1322314 2644628