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30401569 = 112763779
BaseRepresentation
bin111001111111…
…0010000100001
32010012120010001
41303332100201
530240322234
63003340001
7516260212
oct163762041
963176101
1030401569
1116185170
12a221601
1363b59c3
144075409
152a07d14
hex1cfe421

30401569 has 4 divisors (see below), whose sum is σ = 33165360. Its totient is φ = 27637780.

The previous prime is 30401557. The next prime is 30401587. The reversal of 30401569 is 96510403.

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.

It is a cyclic number.

It is not a de Polignac number, because 30401569 - 25 = 30401537 is a prime.

It is a super-2 number, since 2×304015692 = 1848510795323522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30401509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381879 + ... + 1381900.

It is an arithmetic number, because the mean of its divisors is an integer number (8291340).

Almost surely, 230401569 is an apocalyptic number.

It is an amenable number.

30401569 is a deficient number, since it is larger than the sum of its proper divisors (2763791).

30401569 is a wasteful number, since it uses less digits than its factorization.

30401569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763790.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 30401569 is about 5513.7617830298. The cubic root of 30401569 is about 312.1035193694.

The spelling of 30401569 in words is "thirty million, four hundred one thousand, five hundred sixty-nine".

Divisors: 1 11 2763779 30401569