Search a number
-
+
16928202431 = 721392485421
BaseRepresentation
bin11111100001111111…
…11101111010111111
31121200202101210011102
433300333331322333
5234132104434211
611435434043315
71136332226600
oct176077757277
947622353142
1016928202431
1171a7590048
12334527953b
13179a17563a
14b6834dda7
15691243a3b
hex3f0ffdebf

16928202431 has 12 divisors (see below), whose sum is σ = 19833667560. Its totient is φ = 14405494320.

The previous prime is 16928202427. The next prime is 16928202439. The reversal of 16928202431 is 13420282961.

It is not a de Polignac number, because 16928202431 - 22 = 16928202427 is a prime.

It is a super-2 number, since 2×169282024312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16928202439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1235900 + ... + 1249521.

It is an arithmetic number, because the mean of its divisors is an integer number (1652805630).

Almost surely, 216928202431 is an apocalyptic number.

16928202431 is a deficient number, since it is larger than the sum of its proper divisors (2905465129).

16928202431 is a wasteful number, since it uses less digits than its factorization.

16928202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485574 (or 2485567 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 16928202431 in words is "sixteen billion, nine hundred twenty-eight million, two hundred two thousand, four hundred thirty-one".

Divisors: 1 7 49 139 973 6811 2485421 17397947 121785629 345473519 2418314633 16928202431