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385218379 = 7134233169
BaseRepresentation
bin10110111101011…
…111011101001011
3222211212010021101
4112331133131023
51242103442004
6102120322231
712355205440
oct2675373513
9884763241
10385218379
1118849a2a7
12a9013377
1361a67490
14392379c7
1523c43ba4
hex16f5f74b

385218379 has 8 divisors (see below), whose sum is σ = 474115040. Its totient is φ = 304788096.

The previous prime is 385218377. The next prime is 385218391. The reversal of 385218379 is 973812583.

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 385218379 - 21 = 385218377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385218371) 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, 2116494 + ... + 2116675.

It is an arithmetic number, because the mean of its divisors is an integer number (59264380).

Almost surely, 2385218379 is an apocalyptic number.

385218379 is a deficient number, since it is larger than the sum of its proper divisors (88896661).

385218379 is a wasteful number, since it uses less digits than its factorization.

385218379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233189.

The product of its digits is 362880, while the sum is 46.

The square root of 385218379 is about 19626.9808936576. The cubic root of 385218379 is about 727.6161552506.

The spelling of 385218379 in words is "three hundred eighty-five million, two hundred eighteen thousand, three hundred seventy-nine".

Divisors: 1 7 13 91 4233169 29632183 55031197 385218379