Search a number
-
+
1814979028 = 2219971911289
BaseRepresentation
bin110110000101110…
…0110000111010100
311200111012111011111
41230023212013110
512204113312103
6500033144404
762656032022
oct15413460724
94614174144
101814979028
11851565675
124279bb104
1322c035cb5
14133095712
15a951686d
hex6c2e61d4

1814979028 has 48 divisors (see below), whose sum is σ = 3398169600. Its totient is φ = 845752320.

The previous prime is 1814978969. The next prime is 1814979029. The reversal of 1814979028 is 8209794181.

It is a super-3 number, since 3×18149790283 (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814979029) 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, 1407408 + ... + 1408696.

It is an arithmetic number, because the mean of its divisors is an integer number (70795200).

Almost surely, 21814979028 is an apocalyptic number.

It is an amenable number.

1814979028 is a deficient number, since it is larger than the sum of its proper divisors (1583190572).

1814979028 is a wasteful number, since it uses less digits than its factorization.

1814979028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 1598 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 1814979028 is about 42602.5706736108. The cubic root of 1814979028 is about 1219.8053590764.

The spelling of 1814979028 in words is "one billion, eight hundred fourteen million, nine hundred seventy-nine thousand, twenty-eight".

Divisors: 1 2 4 19 38 76 97 191 194 382 388 764 1289 1843 2578 3629 3686 5156 7258 7372 14516 18527 24491 37054 48982 74108 97964 125033 246199 250066 352013 492398 500132 704026 984796 1408052 2375627 4677781 4751254 9355562 9502508 18711124 23881303 47762606 95525212 453744757 907489514 1814979028