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212512480 = 2551328203
BaseRepresentation
bin11001010101010…
…10111011100000
3112210212202022121
430222222323200
5413400344410
633030514024
75160216625
oct1452527340
9483782277
10212512480
11a9a59854
125b205914
133504863b
142031c34c
15139cb9da
hexcaaaee0

212512480 has 24 divisors (see below), whose sum is σ = 502061112. Its totient is φ = 85004928.

The previous prime is 212512477. The next prime is 212512499. The reversal of 212512480 is 84215212.

212512480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663942 + ... + 664261.

It is an arithmetic number, because the mean of its divisors is an integer number (20919213).

Almost surely, 2212512480 is an apocalyptic number.

212512480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212512480 is an abundant number, since it is smaller than the sum of its proper divisors (289548632).

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

212512480 is a wasteful number, since it uses less digits than its factorization.

212512480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328218 (or 1328210 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 212512480 is about 14577.8077912970. The cubic root of 212512480 is about 596.7532778293.

Adding to 212512480 its reverse (84215212), we get a palindrome (296727692).

The spelling of 212512480 in words is "two hundred twelve million, five hundred twelve thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1328203 2656406 5312812 6641015 10625624 13282030 21251248 26564060 42502496 53128120 106256240 212512480