Search a number
-
+
30479571053 = 126967240059
BaseRepresentation
bin11100011000101110…
…010101100001101101
32220200011200122011222
4130120232111201231
5444410232233203
622000242553125
72126212036121
oct343056254155
986604618158
1030479571053
1111a20a17948
125aa76687a5
132b49846759
141692003581
15bd5ca9038
hex718b9586d

30479571053 has 4 divisors (see below), whose sum is σ = 30479938080. Its totient is φ = 30479204028.

The previous prime is 30479571029. The next prime is 30479571061. The reversal of 30479571053 is 35017597403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30479571053 - 216 = 30479505517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30479570995 and 30479571013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30479571013) 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, 6938 + ... + 246996.

It is an arithmetic number, because the mean of its divisors is an integer number (7619984520).

Almost surely, 230479571053 is an apocalyptic number.

It is an amenable number.

30479571053 is a deficient number, since it is larger than the sum of its proper divisors (367027).

30479571053 is a wasteful number, since it uses less digits than its factorization.

30479571053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367026.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 30479571053 in words is "thirty billion, four hundred seventy-nine million, five hundred seventy-one thousand, fifty-three".

Divisors: 1 126967 240059 30479571053