Search a number
-
+
30192473 = 201714969
BaseRepresentation
bin111001100101…
…1001101011001
32002210221021202
41303023031121
530212124343
62555043545
7514426463
oct163131531
962727252
1030192473
1116052063
12a1405b5
13634178c
14401d133
1529b5db8
hex1ccb359

30192473 has 4 divisors (see below), whose sum is σ = 30209460. Its totient is φ = 30175488.

The previous prime is 30192469. The next prime is 30192517. The reversal of 30192473 is 37429103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37429103 = 113331231.

It can be written as a sum of positive squares in 2 ways, for example, as 9653449 + 20539024 = 3107^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 30192473 - 22 = 30192469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30192403) 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, 5468 + ... + 9501.

It is an arithmetic number, because the mean of its divisors is an integer number (7552365).

Almost surely, 230192473 is an apocalyptic number.

It is an amenable number.

30192473 is a deficient number, since it is larger than the sum of its proper divisors (16987).

30192473 is a wasteful number, since it uses less digits than its factorization.

30192473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16986.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30192473 is about 5494.7677839923. The cubic root of 30192473 is about 311.3863438182.

The spelling of 30192473 in words is "thirty million, one hundred ninety-two thousand, four hundred seventy-three".

Divisors: 1 2017 14969 30192473