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30051434 = 272146531
BaseRepresentation
bin111001010100…
…0110001101010
32002112202211002
41302220301222
530143121214
62552035002
7513301340
oct162506152
962482732
1030051434
1115a660a6
12a092a62
1362c251a
143dc3990
1529891de
hex1ca8c6a

30051434 has 8 divisors (see below), whose sum is σ = 51516768. Its totient is φ = 12879180.

The previous prime is 30051433. The next prime is 30051449. The reversal of 30051434 is 43415003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30051433) 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, 1073252 + ... + 1073279.

It is an arithmetic number, because the mean of its divisors is an integer number (6439596).

Almost surely, 230051434 is an apocalyptic number.

30051434 is a deficient number, since it is larger than the sum of its proper divisors (21465334).

30051434 is a wasteful number, since it uses less digits than its factorization.

30051434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146540.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30051434 is about 5481.9188246453. The cubic root of 30051434 is about 310.9007240951.

Adding to 30051434 its reverse (43415003), we get a palindrome (73466437).

The spelling of 30051434 in words is "thirty million, fifty-one thousand, four hundred thirty-four".

Divisors: 1 2 7 14 2146531 4293062 15025717 30051434