Search a number
-
+
30796145 = 573139607
BaseRepresentation
bin111010101111…
…0100101110001
32010221121100222
41311132211301
530340434040
63020022425
7522522452
oct165364561
963847328
1030796145
1116424666
12a391a15
1364c3493
144139129
152a84bb5
hex1d5e971

30796145 has 16 divisors (see below), whose sum is σ = 37793280. Its totient is φ = 24084864.

The previous prime is 30796141. The next prime is 30796147. The reversal of 30796145 is 54169703.

It is a cyclic number.

It is not a de Polignac number, because 30796145 - 22 = 30796141 is a prime.

It is a super-2 number, since 2×307961452 = 1896805093722050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30796141) 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, 50432 + ... + 51038.

It is an arithmetic number, because the mean of its divisors is an integer number (2362080).

Almost surely, 230796145 is an apocalyptic number.

It is an amenable number.

30796145 is a deficient number, since it is larger than the sum of its proper divisors (6997135).

30796145 is a wasteful number, since it uses less digits than its factorization.

30796145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 30796145 is about 5549.4274479445. The cubic root of 30796145 is about 313.4479630636.

The spelling of 30796145 in words is "thirty million, seven hundred ninety-six thousand, one hundred forty-five".

Divisors: 1 5 73 139 365 607 695 3035 10147 44311 50735 84373 221555 421865 6159229 30796145