Search a number
-
+
72030444786 = 23237821913159
BaseRepresentation
bin100001100010101011…
…0010101110011110010
320212220220222201111100
41003011112111303302
52140004243213121
653031302225230
75126660451516
oct1030526256362
9225826881440
1072030444786
1128603343313
1211b62a25216
136a3bcc1281
1436b4558146
151d189d9026
hex10c5595cf2

72030444786 has 48 divisors (see below), whose sum is σ = 160315646400. Its totient is φ = 23356607904.

The previous prime is 72030444767. The next prime is 72030444793. The reversal of 72030444786 is 68744403027.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5467275 + ... + 5480433.

It is an arithmetic number, because the mean of its divisors is an integer number (3339909300).

Almost surely, 272030444786 is an apocalyptic number.

72030444786 is an abundant number, since it is smaller than the sum of its proper divisors (88285201614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72030444786 is a wasteful number, since it uses less digits than its factorization.

72030444786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21423 (or 21420 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 72030444786 in words is "seventy-two billion, thirty million, four hundred forty-four thousand, seven hundred eighty-six".

Divisors: 1 2 3 6 9 18 37 74 111 222 333 666 8219 13159 16438 24657 26318 39477 49314 73971 78954 118431 147942 236862 304103 486883 608206 912309 973766 1460649 1824618 2736927 2921298 4381947 5473854 8763894 108153821 216307642 324461463 648922926 973384389 1946768778 4001691377 8003382754 12005074131 24010148262 36015222393 72030444786