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30368087 = 57752631
BaseRepresentation
bin111001111011…
…0000101010111
32010010212011222
41303312011113
530233234322
63002520555
7516060461
oct163660527
963125158
1030368087
1116161aa2
12a20615b
1363a36a9
144067131
1529ece42
hex1cf6157

30368087 has 4 divisors (see below), whose sum is σ = 30421296. Its totient is φ = 30314880.

The previous prime is 30368077. The next prime is 30368089. The reversal of 30368087 is 78086303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78086303 = 312518913.

It is a cyclic number.

It is not a de Polignac number, because 30368087 - 24 = 30368071 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 (30368089) 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, 25739 + ... + 26892.

It is an arithmetic number, because the mean of its divisors is an integer number (7605324).

Almost surely, 230368087 is an apocalyptic number.

30368087 is a deficient number, since it is larger than the sum of its proper divisors (53209).

30368087 is an equidigital number, since it uses as much as digits as its factorization.

30368087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53208.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 30368087 is about 5510.7247254785. The cubic root of 30368087 is about 311.9889015064.

The spelling of 30368087 in words is "thirty million, three hundred sixty-eight thousand, eighty-seven".

Divisors: 1 577 52631 30368087