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1628088 = 233711881
BaseRepresentation
bin110001101011110111000
310001201022120
412031132320
5404044323
654521240
716560420
oct6153670
93051276
101628088
11a12230
12666220
13450087
14305480
152225e3
hex18d7b8

1628088 has 64 divisors (see below), whose sum is σ = 5080320. Its totient is φ = 422400.

The previous prime is 1628071. The next prime is 1628093. The reversal of 1628088 is 8808261.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 12.

It is a congruent number.

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, 1408 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

21628088 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 1628088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540160).

1628088 is an abundant number, since it is smaller than the sum of its proper divisors (3452232).

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

1628088 is a wasteful number, since it uses less digits than its factorization.

1628088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1628088 is about 1275.9655167754. The cubic root of 1628088 is about 117.6411582531.

The spelling of 1628088 in words is "one million, six hundred twenty-eight thousand, eighty-eight".

Divisors: 1 2 3 4 6 7 8 11 12 14 21 22 24 28 33 42 44 56 66 77 84 88 132 154 168 231 264 308 462 616 881 924 1762 1848 2643 3524 5286 6167 7048 9691 10572 12334 18501 19382 21144 24668 29073 37002 38764 49336 58146 67837 74004 77528 116292 135674 148008 203511 232584 271348 407022 542696 814044 1628088