Search a number
-
+
30493053 = 3217414861
BaseRepresentation
bin111010001010…
…0100101111101
32010101012121100
41310110211331
530301234203
63005323313
7520121013
oct164244575
963335540
1030493053
1116237978
12a266539
136418536
14409a8b3
152a24ea3
hex1d1497d

30493053 has 24 divisors (see below), whose sum is σ = 47783736. Its totient is φ = 18662400.

The previous prime is 30493051. The next prime is 30493093. The reversal of 30493053 is 35039403.

It can be written as a sum of positive squares in 4 ways, for example, as 7193124 + 23299929 = 2682^2 + 4827^2 .

It is not a de Polignac number, because 30493053 - 21 = 30493051 is a prime.

It is a super-4 number, since 4×304930534 (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30493051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3843 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (1990989).

Almost surely, 230493053 is an apocalyptic number.

It is an amenable number.

30493053 is a deficient number, since it is larger than the sum of its proper divisors (17290683).

30493053 is a wasteful number, since it uses less digits than its factorization.

30493053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925 (or 4922 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 30493053 is about 5522.0515209476. The cubic root of 30493053 is about 312.4162651385.

The spelling of 30493053 in words is "thirty million, four hundred ninety-three thousand, fifty-three".

Divisors: 1 3 9 17 41 51 123 153 369 697 2091 4861 6273 14583 43749 82637 199301 247911 597903 743733 1793709 3388117 10164351 30493053