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212248884 = 22390719501
BaseRepresentation
bin11001010011010…
…10100100110100
3112210101100201210
430221222210310
5413313431014
633021121420
75155041261
oct1451524464
9483340653
10212248884
11a9899801
125b0b9270
1334c85673
1420290268
1513978859
hexca6a934

212248884 has 24 divisors (see below), whose sum is σ = 495818848. Its totient is φ = 70668000.

The previous prime is 212248871. The next prime is 212248913. The reversal of 212248884 is 488842212.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 1134 + ... + 20634.

Almost surely, 2212248884 is an apocalyptic number.

It is an amenable number.

212248884 is an abundant number, since it is smaller than the sum of its proper divisors (283569964).

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

212248884 is a wasteful number, since it uses less digits than its factorization.

212248884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20415 (or 20413 counting only the distinct ones).

The product of its digits is 65536, while the sum is 39.

The square root of 212248884 is about 14568.7639832623. The cubic root of 212248884 is about 596.5064423496.

The spelling of 212248884 in words is "two hundred twelve million, two hundred forty-eight thousand, eight hundred eighty-four".

Divisors: 1 2 3 4 6 12 907 1814 2721 3628 5442 10884 19501 39002 58503 78004 117006 234012 17687407 35374814 53062221 70749628 106124442 212248884