[go: up one dir, main page]

Search a number
-
+
18440773 = 132195743
BaseRepresentation
bin100011001011…
…0001001000101
31021200212222121
41012112021011
514210101043
61455125541
7312513121
oct106261105
937625877
1018440773
11a45590a
1262138b1
133a88800
142640581
151943ded
hex1196245

18440773 has 12 divisors (see below), whose sum is σ = 21023040. Its totient is φ = 16123536.

The previous prime is 18440743. The next prime is 18440791. The reversal of 18440773 is 37704481.

It is not a de Polignac number, because 18440773 - 213 = 18432581 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 (18440743) 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, 340 + ... + 6082.

It is an arithmetic number, because the mean of its divisors is an integer number (1751920).

Almost surely, 218440773 is an apocalyptic number.

18440773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18440773 is a deficient number, since it is larger than the sum of its proper divisors (2582267).

18440773 is a wasteful number, since it uses less digits than its factorization.

18440773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788 (or 5775 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 18440773 is about 4294.2721152717. The cubic root of 18440773 is about 264.1960827083.

The spelling of 18440773 in words is "eighteen million, four hundred forty thousand, seven hundred seventy-three".

Divisors: 1 13 19 169 247 3211 5743 74659 109117 970567 1418521 18440773