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244679620 = 22531738593
BaseRepresentation
bin11101001010110…
…00001111000100
3122001102000100011
432211120033010
51000114221440
640140200004
76030512443
oct1645301704
9561360304
10244679620
1111612a469
1269b39004
133b8cbb53
14246d2d5a
15167329ea
hexe9583c4

244679620 has 24 divisors (see below), whose sum is σ = 515461464. Its totient is φ = 97560576.

The previous prime is 244679581. The next prime is 244679629. The reversal of 244679620 is 26976442.

It can be written as a sum of positive squares in 4 ways, for example, as 5234944 + 239444676 = 2288^2 + 15474^2 .

It is not an unprimeable number, because it can be changed into a prime (244679629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12957 + ... + 25636.

It is an arithmetic number, because the mean of its divisors is an integer number (21477561).

Almost surely, 2244679620 is an apocalyptic number.

244679620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244679620 is an abundant number, since it is smaller than the sum of its proper divisors (270781844).

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

244679620 is a wasteful number, since it uses less digits than its factorization.

244679620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38919 (or 38917 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 244679620 is about 15642.2383308784. The cubic root of 244679620 is about 625.4596043393.

The spelling of 244679620 in words is "two hundred forty-four million, six hundred seventy-nine thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 317 634 1268 1585 3170 6340 38593 77186 154372 192965 385930 771860 12233981 24467962 48935924 61169905 122339810 244679620