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245503680 = 2635255733
BaseRepresentation
bin11101010001000…
…01011011000000
3122002221212201220
432220201123000
51000322104210
640205555040
76040514112
oct1650413300
9562855656
10245503680
11116642604
126a275a80
133bb29c66
14248693b2
1516846c70
hexea216c0

245503680 has 56 divisors (see below), whose sum is σ = 779477232. Its totient is φ = 65467392.

The previous prime is 245503673. The next prime is 245503703. The reversal of 245503680 is 86305542.

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 7 ways as a sum of consecutive naturals, for example, 126907 + ... + 128826.

Almost surely, 2245503680 is an apocalyptic number.

245503680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245503680 is an abundant number, since it is smaller than the sum of its proper divisors (533973552).

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

245503680 is a wasteful number, since it uses less digits than its factorization.

245503680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255753 (or 255743 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 245503680 is about 15668.5570490712. The cubic root of 245503680 is about 626.1609823234.

The spelling of 245503680 in words is "two hundred forty-five million, five hundred three thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 960 255733 511466 767199 1022932 1278665 1534398 2045864 2557330 3068796 3835995 4091728 5114660 6137592 7671990 8183456 10229320 12275184 15343980 16366912 20458640 24550368 30687960 40917280 49100736 61375920 81834560 122751840 245503680