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212052516 = 223131359311
BaseRepresentation
bin11001010001110…
…10101000100100
3112210000101100220
430220322220210
5413241140031
633013004340
75153262624
oct1450725044
9483011326
10212052516
11a9775215
125b0236b0
1334c17180
142023c884
151393a596
hexca3aa24

212052516 has 24 divisors (see below), whose sum is σ = 532850304. Its totient is φ = 65246880.

The previous prime is 212052497. The next prime is 212052527. The reversal of 212052516 is 615250212.

It is a happy 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, 679500 + ... + 679811.

It is an arithmetic number, because the mean of its divisors is an integer number (22202096).

Almost surely, 2212052516 is an apocalyptic number.

212052516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

212052516 is an abundant number, since it is smaller than the sum of its proper divisors (320797788).

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

212052516 is a wasteful number, since it uses less digits than its factorization.

212052516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359331 (or 1359329 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 212052516 is about 14562.0230737353. The cubic root of 212052516 is about 596.3224273748.

The spelling of 212052516 in words is "two hundred twelve million, fifty-two thousand, five hundred sixteen".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 1359311 2718622 4077933 5437244 8155866 16311732 17671043 35342086 53013129 70684172 106026258 212052516