Search a number
-
+
2764742620 = 225434018017
BaseRepresentation
bin1010010011001010…
…1001111111011100
321010200100110212211
42210302221333130
521130233230440
61134202010204
7125340632053
oct24462517734
97120313784
102764742620
111199697062
12651aa6964
13350a342a3
141c328739a
15112ac2eea
hexa4ca9fdc

2764742620 has 48 divisors (see below), whose sum is σ = 5956540128. Its totient is φ = 1077350400.

The previous prime is 2764742587. The next prime is 2764742639. The reversal of 2764742620 is 262474672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340852 + ... + 348868.

It is an arithmetic number, because the mean of its divisors is an integer number (124094586).

Almost surely, 22764742620 is an apocalyptic number.

2764742620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2764742620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2978270064).

2764742620 is an abundant number, since it is smaller than the sum of its proper divisors (3191797508).

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

2764742620 is a wasteful number, since it uses less digits than its factorization.

2764742620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8470 (or 8468 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 2764742620 is about 52580.8198871033. The cubic root of 2764742620 is about 1403.5188047763.

The spelling of 2764742620 in words is "two billion, seven hundred sixty-four million, seven hundred forty-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 401 430 802 860 1604 2005 4010 8017 8020 16034 17243 32068 34486 40085 68972 80170 86215 160340 172430 344731 344860 689462 1378924 1723655 3214817 3447310 6429634 6894620 12859268 16074085 32148170 64296340 138237131 276474262 552948524 691185655 1382371310 2764742620