Search a number
-
+
18142954 = 257115887
BaseRepresentation
bin100010100110…
…1011011101010
31021010202110021
41011031123222
514121033304
61444511054
7310132624
oct105153352
937122407
1018142954
11a272085
1260ab48a
1339b309b
1425a3c14
1518d5a54
hex114d6ea

18142954 has 8 divisors (see below), whose sum is σ = 27263808. Its totient is φ = 9055020.

The previous prime is 18142937. The next prime is 18142963. The reversal of 18142954 is 45924181.

It is a happy number.

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

It is a super-2 number, since 2×181429542 = 658333559692232, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6802 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (3407976).

Almost surely, 218142954 is an apocalyptic number.

18142954 is a deficient number, since it is larger than the sum of its proper divisors (9120854).

18142954 is a wasteful number, since it uses less digits than its factorization.

18142954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16460.

The product of its digits is 11520, while the sum is 34.

The square root of 18142954 is about 4259.4546599301. The cubic root of 18142954 is about 262.7660987184.

The spelling of 18142954 in words is "eighteen million, one hundred forty-two thousand, nine hundred fifty-four".

Divisors: 1 2 571 1142 15887 31774 9071477 18142954