Search a number
-
+
305554080 = 253513232129
BaseRepresentation
bin10010001101100…
…110001010100000
3210021221202101210
4102031212022200
51111210212310
650153030120
710400111136
oct2215461240
9707852353
10305554080
11147528337
12863b5340
134b3c3b40
142c81b756
151bc59820
hex123662a0

305554080 has 192 divisors, whose sum is σ = 1082108160. Its totient is φ = 71909376.

The previous prime is 305554069. The next prime is 305554127. The reversal of 305554080 is 80455503.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142456 + ... + 144584.

It is an arithmetic number, because the mean of its divisors is an integer number (5635980).

Almost surely, 2305554080 is an apocalyptic number.

305554080 is a gapful number since it is divisible by the number (30) 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 305554080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541054080).

305554080 is an abundant number, since it is smaller than the sum of its proper divisors (776554080).

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

305554080 is a wasteful number, since it uses less digits than its factorization.

305554080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 305554080 is about 17480.1052628410. The cubic root of 305554080 is about 673.5389192400.

The spelling of 305554080 in words is "three hundred five million, five hundred fifty-four thousand, eighty".