Search a number
-
+
2920631760 = 24325291371021
BaseRepresentation
bin1010111000010101…
…0100110111010000
321112112200110120200
42232011110313100
521440140204020
61201451135200
7132242650254
oct25605246720
97475613520
102920631760
111269690962
12696144500
13377115897
141d9c66264
15121617590
hexae154dd0

2920631760 has 240 divisors, whose sum is σ = 10230751440. Its totient is φ = 745758720.

The previous prime is 2920631729. The next prime is 2920631803. The reversal of 2920631760 is 671360292.

It can be written as a sum of positive squares in 8 ways, for example, as 2039184 + 2918592576 = 1428^2 + 54024^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2860050 + ... + 2861070.

It is an arithmetic number, because the mean of its divisors is an integer number (42628131).

Almost surely, 22920631760 is an apocalyptic number.

2920631760 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 2920631760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5115375720).

2920631760 is an abundant number, since it is smaller than the sum of its proper divisors (7310119680).

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

2920631760 is a wasteful number, since it uses less digits than its factorization.

2920631760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 2920631760 is about 54042.8696499362. The cubic root of 2920631760 is about 1429.4169726209.

The spelling of 2920631760 in words is "two billion, nine hundred twenty million, six hundred thirty-one thousand, seven hundred sixty".