Search a number
-
+
30798260 = 2251539913
BaseRepresentation
bin111010101111…
…1000110110100
32010221201021022
41311133012310
530341021020
63020040312
7522531563
oct165370664
963851238
1030798260
1116426209
12a393098
1364c442c
144139bda
152a85625
hex1d5f1b4

30798260 has 12 divisors (see below), whose sum is σ = 64676388. Its totient is φ = 12319296.

The previous prime is 30798241. The next prime is 30798269. The reversal of 30798260 is 6289703.

It can be written as a sum of positive squares in 2 ways, for example, as 11806096 + 18992164 = 3436^2 + 4358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30798260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30798269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769937 + ... + 769976.

It is an arithmetic number, because the mean of its divisors is an integer number (5389699).

Almost surely, 230798260 is an apocalyptic number.

It is an amenable number.

30798260 is an abundant number, since it is smaller than the sum of its proper divisors (33878128).

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

30798260 is a wasteful number, since it uses less digits than its factorization.

30798260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539922 (or 1539920 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 30798260 is about 5549.6180048720. The cubic root of 30798260 is about 313.4551384992.

The spelling of 30798260 in words is "thirty million, seven hundred ninety-eight thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 1539913 3079826 6159652 7699565 15399130 30798260