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384122253 = 3791620769
BaseRepresentation
bin10110111001010…
…011110110001101
3222202210102200010
4112321103312031
51241313403003
6102041023433
712342661644
oct2671236615
9882712603
10384122253
11187910809
12a8784b79
1361772598
143903035b
1523ac9003
hex16e53d8d

384122253 has 8 divisors (see below), whose sum is σ = 518646400. Its totient is φ = 252839808.

The previous prime is 384122251. The next prime is 384122267. The reversal of 384122253 is 352221483.

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

It is not a de Polignac number, because 384122253 - 21 = 384122251 is a prime.

It is a super-4 number, since 4×3841222534 (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384122253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384122251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810148 + ... + 810621.

It is an arithmetic number, because the mean of its divisors is an integer number (64830800).

Almost surely, 2384122253 is an apocalyptic number.

It is an amenable number.

384122253 is a deficient number, since it is larger than the sum of its proper divisors (134524147).

384122253 is a wasteful number, since it uses less digits than its factorization.

384122253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620851.

The product of its digits is 11520, while the sum is 30.

The square root of 384122253 is about 19599.0370426713. The cubic root of 384122253 is about 726.9253638249.

The spelling of 384122253 in words is "three hundred eighty-four million, one hundred twenty-two thousand, two hundred fifty-three".

Divisors: 1 3 79 237 1620769 4862307 128040751 384122253