Search a number
-
+
2944981 = 131911923
BaseRepresentation
bin1011001110111111010101
312112121202101
423032333111
51223214411
6143042101
734013644
oct13167725
95477671
102944981
111731676
12ba0331
137c15c0
1456935b
153d28c1
hex2cefd5

2944981 has 8 divisors (see below), whose sum is σ = 3338720. Its totient is φ = 2575152.

The previous prime is 2944967. The next prime is 2944999. The reversal of 2944981 is 1894492.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2944981 - 215 = 2912213 is a prime.

It is a super-2 number, since 2×29449812 = 17345826180722, which contains 22 as substring.

It is a Duffinian number.

2944981 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2944981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2944681) 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, 5715 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (417340).

22944981 is an apocalyptic number.

It is an amenable number.

2944981 is a deficient number, since it is larger than the sum of its proper divisors (393739).

2944981 is a wasteful number, since it uses less digits than its factorization.

2944981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11955.

The product of its digits is 20736, while the sum is 37.

The square root of 2944981 is about 1716.0946943569. The cubic root of 2944981 is about 143.3378323208.

The spelling of 2944981 in words is "two million, nine hundred forty-four thousand, nine hundred eighty-one".

Divisors: 1 13 19 247 11923 154999 226537 2944981