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30014861 = 67447983
BaseRepresentation
bin111001001111…
…1110110001101
32002110220122112
41302133312031
530140433421
62551153405
7513056612
oct162376615
962426575
1030014861
1115a40678
12a075865
1362ab996
143db4509
15297d45b
hex1c9fd8d

30014861 has 4 divisors (see below), whose sum is σ = 30462912. Its totient is φ = 29566812.

The previous prime is 30014857. The next prime is 30014879. The reversal of 30014861 is 16841003.

30014861 is nontrivially palindromic in base 4.

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 30014861 - 22 = 30014857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30014821) 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, 223925 + ... + 224058.

It is an arithmetic number, because the mean of its divisors is an integer number (7615728).

Almost surely, 230014861 is an apocalyptic number.

It is an amenable number.

30014861 is a deficient number, since it is larger than the sum of its proper divisors (448051).

30014861 is an equidigital number, since it uses as much as digits as its factorization.

30014861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448050.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 30014861 is about 5478.5820245753. The cubic root of 30014861 is about 310.7745494394.

Adding to 30014861 its reverse (16841003), we get a palindrome (46855864).

The spelling of 30014861 in words is "thirty million, fourteen thousand, eight hundred sixty-one".

Divisors: 1 67 447983 30014861