Search a number
-
+
7440797 = 721311681
BaseRepresentation
bin11100011000100110011101
3112000000212002
4130120212131
53401101142
6423252045
7120150200
oct34304635
915000762
107440797
114222421
1225aa025
131706a50
14db9937
159bea32
hex71899d

7440797 has 12 divisors (see below), whose sum is σ = 9322236. Its totient is φ = 5886720.

The previous prime is 7440779. The next prime is 7440821. The reversal of 7440797 is 7970447.

It can be written as a sum of positive squares in 2 ways, for example, as 2328676 + 5112121 = 1526^2 + 2261^2 .

It is not a de Polignac number, because 7440797 - 214 = 7424413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7440797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5204 + ... + 6477.

It is an arithmetic number, because the mean of its divisors is an integer number (776853).

Almost surely, 27440797 is an apocalyptic number.

It is an amenable number.

7440797 is a deficient number, since it is larger than the sum of its proper divisors (1881439).

7440797 is a wasteful number, since it uses less digits than its factorization.

7440797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11708 (or 11701 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 7440797 is about 2727.7824326731. The cubic root of 7440797 is about 195.2269721782.

The spelling of 7440797 in words is "seven million, four hundred forty thousand, seven hundred ninety-seven".

Divisors: 1 7 13 49 91 637 11681 81767 151853 572369 1062971 7440797