Search a number
-
+
395122807 = 31971011301
BaseRepresentation
bin10111100011010…
…001100001110111
31000112111022121001
4113203101201313
51302122412212
6103112504131
712535326352
oct2743214167
91015438531
10395122807
11193044682
12b03ab047
1363b246a1
143a695299
1524a4d657
hex178d1877

395122807 has 16 divisors (see below), whose sum is σ = 416473344. Its totient is φ = 374400000.

The previous prime is 395122799. The next prime is 395122813. The reversal of 395122807 is 708221593.

It is a cyclic number.

It is not a de Polignac number, because 395122807 - 23 = 395122799 is a prime.

It is a super-3 number, since 3×3951228073 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395122817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303057 + ... + 304357.

It is an arithmetic number, because the mean of its divisors is an integer number (26029584).

Almost surely, 2395122807 is an apocalyptic number.

395122807 is a deficient number, since it is larger than the sum of its proper divisors (21350537).

395122807 is a wasteful number, since it uses less digits than its factorization.

395122807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 395122807 is about 19877.6962196327. The cubic root of 395122807 is about 733.7994233750.

The spelling of 395122807 in words is "three hundred ninety-five million, one hundred twenty-two thousand, eight hundred seven".

Divisors: 1 31 97 101 1301 3007 3131 9797 40331 126197 131401 303707 3912107 4073431 12745897 395122807