Search a number
BaseRepresentation
bin10110111100100…
…100100100111101
3222211101212110022
4112330210210331
51242023232323
6102111221525
712353152355
oct2674444475
9884355408
10384977213
11188345095
12a8b178a5
13619b178a
14391b3b65
1523be74c8
hex16f2493d

384977213 has 8 divisors (see below), whose sum is σ = 392549976. Its totient is φ = 377416000.

The previous prime is 384977207. The next prime is 384977273. The reversal of 384977213 is 312779483.

It can be written as a sum of positive squares in 4 ways, for example, as 85618009 + 299359204 = 9253^2 + 17302^2 .

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 384977213 - 216 = 384911677 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 (384977273) 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, 98843 + ... + 102663.

It is an arithmetic number, because the mean of its divisors is an integer number (49068747).

Almost surely, 2384977213 is an apocalyptic number.

It is an amenable number.

384977213 is a deficient number, since it is larger than the sum of its proper divisors (7572763).

384977213 is a wasteful number, since it uses less digits than its factorization.

384977213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775.

The product of its digits is 254016, while the sum is 44.

The square root of 384977213 is about 19620.8361952288. The cubic root of 384977213 is about 727.4642821668.

The spelling of 384977213 in words is "three hundred eighty-four million, nine hundred seventy-seven thousand, two hundred thirteen".