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2128412 = 221113612
BaseRepresentation
bin1000000111101000011100
311000010122002
420013220130
51021102122
6113341432
724043166
oct10075034
94003562
102128412
111224120
12867878
13596a20
143d5936
152c0992
hex207a1c

2128412 has 36 divisors (see below), whose sum is σ = 4448808. Its totient is φ = 878400.

The previous prime is 2128409. The next prime is 2128439. The reversal of 2128412 is 2148212.

Added to its reverse (2148212) it gives a square (4276624 = 20682).

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34862 + ... + 34922.

It is an arithmetic number, because the mean of its divisors is an integer number (123578).

22128412 is an apocalyptic number.

2128412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2128412 is an abundant number, since it is smaller than the sum of its proper divisors (2320396).

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

2128412 is a wasteful number, since it uses less digits than its factorization.

2128412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 87 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 2128412 is about 1458.9078106584. The cubic root of 2128412 is about 128.6328522499.

Adding to 2128412 its reverse (2148212), we get a square (4276624 = 20682).

The spelling of 2128412 in words is "two million, one hundred twenty-eight thousand, four hundred twelve".

Divisors: 1 2 4 11 13 22 26 44 52 61 122 143 244 286 572 671 793 1342 1586 2684 3172 3721 7442 8723 14884 17446 34892 40931 48373 81862 96746 163724 193492 532103 1064206 2128412