Search a number
-
+
2768815641 = 31948575713
BaseRepresentation
bin1010010100001000…
…1100011000011001
321010222000102000110
42211002030120121
521132304100031
61134425154533
7125420354544
oct24502143031
97128012013
102768815641
1111a0a19199
1265332ba49
1335182c167
141c3a2785b
15113129c46
hexa508c619

2768815641 has 8 divisors (see below), whose sum is σ = 3886057120. Its totient is φ = 1748725632.

The previous prime is 2768815597. The next prime is 2768815667. The reversal of 2768815641 is 1465188672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2768815641 - 215 = 2768782873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2768815691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24287800 + ... + 24287913.

It is an arithmetic number, because the mean of its divisors is an integer number (485757140).

Almost surely, 22768815641 is an apocalyptic number.

It is an amenable number.

2768815641 is a deficient number, since it is larger than the sum of its proper divisors (1117241479).

2768815641 is a wasteful number, since it uses less digits than its factorization.

2768815641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48575735.

The product of its digits is 645120, while the sum is 48.

The square root of 2768815641 is about 52619.5366855315. The cubic root of 2768815641 is about 1404.2076882677.

The spelling of 2768815641 in words is "two billion, seven hundred sixty-eight million, eight hundred fifteen thousand, six hundred forty-one".

Divisors: 1 3 19 57 48575713 145727139 922938547 2768815641