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30124297 = 74303471
BaseRepresentation
bin111001011101…
…0100100001001
32002200110202201
41302322210021
530202434142
62553400201
7514023640
oct162724411
962613681
1030124297
1116005915
12a109061
136319738
144002357
1529a0ab7
hex1cba909

30124297 has 4 divisors (see below), whose sum is σ = 34427776. Its totient is φ = 25820820.

The previous prime is 30124249. The next prime is 30124313. The reversal of 30124297 is 79242103.

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 a de Polignac number, because none of the positive numbers 2k-30124297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30124207) 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, 2151729 + ... + 2151742.

It is an arithmetic number, because the mean of its divisors is an integer number (8606944).

Almost surely, 230124297 is an apocalyptic number.

It is an amenable number.

30124297 is a deficient number, since it is larger than the sum of its proper divisors (4303479).

30124297 is an equidigital number, since it uses as much as digits as its factorization.

30124297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303478.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30124297 is about 5488.5605581063. The cubic root of 30124297 is about 311.1517922662.

The spelling of 30124297 in words is "thirty million, one hundred twenty-four thousand, two hundred ninety-seven".

Divisors: 1 7 4303471 30124297