Search a number
-
+
2981355 = 351315289
BaseRepresentation
bin1011010111110111101011
312121110122120
423113313223
51230400410
6143522323
734224666
oct13276753
95543576
102981355
111756a33
12bb93a3
13805020
145786dd
153dd570
hex2d7deb

2981355 has 16 divisors (see below), whose sum is σ = 5137440. Its totient is φ = 1467648.

The previous prime is 2981339. The next prime is 2981357. The reversal of 2981355 is 5531892.

It is not a de Polignac number, because 2981355 - 24 = 2981339 is a prime.

2981355 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2981357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7450 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (321090).

22981355 is an apocalyptic number.

2981355 is a deficient number, since it is larger than the sum of its proper divisors (2156085).

2981355 is a wasteful number, since it uses less digits than its factorization.

2981355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15310.

The product of its digits is 10800, while the sum is 33.

The square root of 2981355 is about 1726.6600707725. The cubic root of 2981355 is about 143.9255498636.

It can be divided in two parts, 298 and 1355, that added together give a triangular number (1653 = T57).

The spelling of 2981355 in words is "two million, nine hundred eighty-one thousand, three hundred fifty-five".

Divisors: 1 3 5 13 15 39 65 195 15289 45867 76445 198757 229335 596271 993785 2981355