Search a number
-
+
649413252 = 223218039257
BaseRepresentation
bin100110101101010…
…100001010000100
31200020222121111200
4212231110022010
52312222211002
6144235102500
722043631045
oct4655241204
91606877450
10649413252
11303638874
121615a1a30
13a4709bc7
146236a8cc
153c02db1c
hex26b54284

649413252 has 18 divisors (see below), whose sum is σ = 1641572478. Its totient is φ = 216471072.

The previous prime is 649413221. The next prime is 649413283. The reversal of 649413252 is 252314946.

It is a happy number.

649413252 is a `hidden beast` number, since 649 + 4 + 1 + 3 + 2 + 5 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (649413221) and next prime (649413283).

It can be written as a sum of positive squares in only one way, i.e., 593701956 + 55711296 = 24366^2 + 7464^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18039257 = 649413252 / (6 + 4 + 9 + 4 + 1 + 3 + 2 + 5 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9019593 + ... + 9019664.

It is an arithmetic number, because the mean of its divisors is an integer number (91198471).

Almost surely, 2649413252 is an apocalyptic number.

It is an amenable number.

649413252 is an abundant number, since it is smaller than the sum of its proper divisors (992159226).

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

649413252 is a wasteful number, since it uses less digits than its factorization.

649413252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18039267 (or 18039262 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 649413252 is about 25483.5878949570. The cubic root of 649413252 is about 865.9783786362.

The spelling of 649413252 in words is "six hundred forty-nine million, four hundred thirteen thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 18039257 36078514 54117771 72157028 108235542 162353313 216471084 324706626 649413252