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305041080 = 23352542009
BaseRepresentation
bin10010001011101…
…000111010111000
3210020222200200210
4102023220322320
51111042303310
650134031120
710362543411
oct2213507270
9706880623
10305041080
11147207973
12861a84a0
134b2744a6
142c726808
151bba7820
hex122e8eb8

305041080 has 32 divisors (see below), whose sum is σ = 915123600. Its totient is φ = 81344256.

The previous prime is 305041073. The next prime is 305041133. The reversal of 305041080 is 80140503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270885 + ... + 1271124.

Almost surely, 2305041080 is an apocalyptic number.

305041080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

305041080 is an abundant number, since it is smaller than the sum of its proper divisors (610082520).

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

305041080 is a wasteful number, since it uses less digits than its factorization.

305041080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542023 (or 2542019 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 305041080 is about 17465.4252739520. The cubic root of 305041080 is about 673.1617694016.

Adding to 305041080 its reverse (80140503), we get a palindrome (385181583).

The spelling of 305041080 in words is "three hundred five million, forty-one thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 2542009 5084018 7626027 10168036 12710045 15252054 20336072 25420090 30504108 38130135 50840180 61008216 76260270 101680360 152520540 305041080