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16311245 = 5171271511
BaseRepresentation
bin111110001110…
…001111001101
31010200200211012
4332032033031
513133424440
61341335005
7255433436
oct76161715
933620735
1016311245
119230975
125567465
1334c1432
14224848d
151672e65
hexf8e3cd

16311245 has 16 divisors (see below), whose sum is σ = 20901888. Its totient is φ = 12176640.

The previous prime is 16311241. The next prime is 16311263. The reversal of 16311245 is 54211361.

It is not a de Polignac number, because 16311245 - 22 = 16311241 is a prime.

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 16311245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311241) 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, 10040 + ... + 11550.

It is an arithmetic number, because the mean of its divisors is an integer number (1306368).

Almost surely, 216311245 is an apocalyptic number.

It is an amenable number.

16311245 is a deficient number, since it is larger than the sum of its proper divisors (4590643).

16311245 is a wasteful number, since it uses less digits than its factorization.

16311245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660.

The product of its digits is 720, while the sum is 23.

The square root of 16311245 is about 4038.7182372629. The cubic root of 16311245 is about 253.6076620085.

The spelling of 16311245 in words is "sixteen million, three hundred eleven thousand, two hundred forty-five".

Divisors: 1 5 17 85 127 635 1511 2159 7555 10795 25687 128435 191897 959485 3262249 16311245