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30181413 = 389113039
BaseRepresentation
bin111001100100…
…0100000100101
32002210101010010
41303020200211
530211301123
62554520433
7514352313
oct163104045
962711103
1030181413
1116044819
12a136119
136339732
1440190b3
1529b2993
hex1cc8825

30181413 has 8 divisors (see below), whose sum is σ = 40694400. Its totient is φ = 19894688.

The previous prime is 30181387. The next prime is 30181429. The reversal of 30181413 is 31418103.

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

It is a cyclic number.

It is not a de Polignac number, because 30181413 - 28 = 30181157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30181413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30181493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56253 + ... + 56786.

It is an arithmetic number, because the mean of its divisors is an integer number (5086800).

Almost surely, 230181413 is an apocalyptic number.

It is an amenable number.

30181413 is a deficient number, since it is larger than the sum of its proper divisors (10512987).

30181413 is a wasteful number, since it uses less digits than its factorization.

30181413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113131.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 30181413 is about 5493.7612798519. The cubic root of 30181413 is about 311.3483171929.

Adding to 30181413 its reverse (31418103), we get a palindrome (61599516).

The spelling of 30181413 in words is "thirty million, one hundred eighty-one thousand, four hundred thirteen".

Divisors: 1 3 89 267 113039 339117 10060471 30181413