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30668278334 = 215334139167
BaseRepresentation
bin11100100011111110…
…001100101000111110
32221011022202221220112
4130203332030220332
51000302034401314
622031103350022
72133663031121
oct344376145076
987138687815
1030668278334
1112008497481
125b3a8b2312
132b79978975
1416ad0c63b8
15be763243e
hex723f8ca3e

30668278334 has 4 divisors (see below), whose sum is σ = 46002417504. Its totient is φ = 15334139166.

The previous prime is 30668278313. The next prime is 30668278337. The reversal of 30668278334 is 43387286603.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668278337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7667069582 + ... + 7667069585.

It is an arithmetic number, because the mean of its divisors is an integer number (11500604376).

Almost surely, 230668278334 is an apocalyptic number.

30668278334 is a deficient number, since it is larger than the sum of its proper divisors (15334139170).

30668278334 is a wasteful number, since it uses less digits than its factorization.

30668278334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15334139169.

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 30668278334 in words is "thirty billion, six hundred sixty-eight million, two hundred seventy-eight thousand, three hundred thirty-four".

Divisors: 1 2 15334139167 30668278334