Search a number
-
+
80371802784 = 253713232691487
BaseRepresentation
bin100101011011010001…
…0000110001010100000
321200110020201121112110
41022312202012022200
52304100140142114
6100531114355320
75543455023510
oct1126642061240
9250406647473
1080371802784
11310a3873009
12136b042bb40
13776b182b70
143c662bd840
152155e62759
hex12b68862a0

80371802784 has 384 divisors, whose sum is σ = 272142581760. Its totient is φ = 20186394624.

The previous prime is 80371802783. The next prime is 80371802803. The reversal of 80371802784 is 48720817308.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (80371802783) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54048889 + ... + 54050375.

It is an arithmetic number, because the mean of its divisors is an integer number (708704640).

Almost surely, 280371802784 is an apocalyptic number.

80371802784 is a gapful number since it is divisible by the number (84) 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 80371802784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136071290880).

80371802784 is an abundant number, since it is smaller than the sum of its proper divisors (191770778976).

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

80371802784 is a wasteful number, since it uses less digits than its factorization.

80371802784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 80371802784 in words is "eighty billion, three hundred seventy-one million, eight hundred two thousand, seven hundred eighty-four".