Search a number
-
+
2215486 = 272133747
BaseRepresentation
bin1000011100111000111110
311011120002001
420130320332
51031343421
6115252514
724555100
oct10347076
94146061
102215486
111283589
128aa13a
135c7550
14419570
152db691
hex21ce3e

2215486 has 48 divisors (see below), whose sum is σ = 4366656. Its totient is φ = 834624.

The previous prime is 2215471. The next prime is 2215487. The reversal of 2215486 is 6845122.

It is a d-powerful number, because it can be written as 213 + 219 + 1 + 55 + 44 + 8 + 68 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47115 + ... + 47161.

It is an arithmetic number, because the mean of its divisors is an integer number (90972).

22215486 is an apocalyptic number.

2215486 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2215486 is a deficient number, since it is larger than the sum of its proper divisors (2151170).

2215486 is a wasteful number, since it uses less digits than its factorization.

2215486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 106 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 2215486 is about 1488.4508725517. The cubic root of 2215486 is about 130.3635974893.

It can be divided in two parts, 2215 and 486, that added together give a triangular number (2701 = T73).

The spelling of 2215486 in words is "two million, two hundred fifteen thousand, four hundred eighty-six".

Divisors: 1 2 7 13 14 26 37 47 49 74 91 94 98 182 259 329 481 518 611 637 658 962 1222 1274 1739 1813 2303 3367 3478 3626 4277 4606 6734 8554 12173 22607 23569 24346 29939 45214 47138 59878 85211 158249 170422 316498 1107743 2215486