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2055420 = 2232519601
BaseRepresentation
bin111110101110011111100
310212102111200
413311303330
51011233140
6112015500
723320323
oct7656374
93772450
102055420
1111842a4
12831590
1356c733
143b70ba
152a9030
hex1f5cfc

2055420 has 72 divisors (see below), whose sum is σ = 6573840. Its totient is φ = 518400.

The previous prime is 2055409. The next prime is 2055437. The reversal of 2055420 is 245502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2055393 and 2055402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3120 + ... + 3720.

22055420 is an apocalyptic number.

2055420 is a gapful number since it is divisible by the number (20) 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 2055420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3286920).

2055420 is an abundant number, since it is smaller than the sum of its proper divisors (4518420).

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

2055420 is a wasteful number, since it uses less digits than its factorization.

2055420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2055420 is about 1433.6736030213. The cubic root of 2055420 is about 127.1452654031.

It can be divided in two parts, 205 and 5420, that added together give a square (5625 = 752).

The spelling of 2055420 in words is "two million, fifty-five thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 38 45 57 60 76 90 95 114 171 180 190 228 285 342 380 570 601 684 855 1140 1202 1710 1803 2404 3005 3420 3606 5409 6010 7212 9015 10818 11419 12020 18030 21636 22838 27045 34257 36060 45676 54090 57095 68514 102771 108180 114190 137028 171285 205542 228380 342570 411084 513855 685140 1027710 2055420