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431078980 = 22521553949
BaseRepresentation
bin11001101100011…
…011111001000100
31010001011002012011
4121230123321010
51340324011410
6110435304004
713453053013
oct3154337104
91101132164
10431078980
11201373022
1210044b004
136b403727
1441374a7a
1527ca218a
hex19b1be44

431078980 has 12 divisors (see below), whose sum is σ = 905265900. Its totient is φ = 172431584.

The previous prime is 431078929. The next prime is 431078983. The reversal of 431078980 is 89870134.

It can be written as a sum of positive squares in 2 ways, for example, as 167081476 + 263997504 = 12926^2 + 16248^2 .

It is not an unprimeable number, because it can be changed into a prime (431078983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10776955 + ... + 10776994.

It is an arithmetic number, because the mean of its divisors is an integer number (75438825).

Almost surely, 2431078980 is an apocalyptic number.

It is an amenable number.

431078980 is an abundant number, since it is smaller than the sum of its proper divisors (474186920).

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

431078980 is a wasteful number, since it uses less digits than its factorization.

431078980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21553958 (or 21553956 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 431078980 is about 20762.4415712604. The cubic root of 431078980 is about 755.4150196932.

The spelling of 431078980 in words is "four hundred thirty-one million, seventy-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 21553949 43107898 86215796 107769745 215539490 431078980