Search a number
-
+
2215401412 = 22779121479
BaseRepresentation
bin1000010000001100…
…0101011111000100
312201101200001102011
42010003011133010
514014120321122
61003455424004
7105620413150
oct20403053704
95641601364
102215401412
11a37599964
12519b25004
13293c94913
1417032a060
15ce760377
hex840c57c4

2215401412 has 12 divisors (see below), whose sum is σ = 4430802880. Its totient is φ = 949457736.

The previous prime is 2215401407. The next prime is 2215401413. The reversal of 2215401412 is 2141045122.

2215401412 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2215401413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39560712 + ... + 39560767.

Almost surely, 22215401412 is an apocalyptic number.

It is an amenable number.

2215401412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2215401412 is a wasteful number, since it uses less digits than its factorization.

2215401412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79121490 (or 79121488 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2215401412 is about 47068.0508625543. The cubic root of 2215401412 is about 1303.6193835956.

Adding to 2215401412 its reverse (2141045122), we get a palindrome (4356446534).

The spelling of 2215401412 in words is "two billion, two hundred fifteen million, four hundred one thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 79121479 158242958 316485916 553850353 1107700706 2215401412