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213358044 = 22317779837
BaseRepresentation
bin11001011011110…
…01010111011100
3112212110201012210
430231321113130
5414104424134
633101000420
75200341054
oct1455712734
9485421183
10213358044
11aa487069
125b553110
1335283483
142049c564
1513ae72e9
hexcb795dc

213358044 has 12 divisors (see below), whose sum is σ = 497835464. Its totient is φ = 71119344.

The previous prime is 213358043. The next prime is 213358063. The reversal of 213358044 is 440853312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213358043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8889907 + ... + 8889930.

Almost surely, 2213358044 is an apocalyptic number.

It is an amenable number.

213358044 is an abundant number, since it is smaller than the sum of its proper divisors (284477420).

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

213358044 is a wasteful number, since it uses less digits than its factorization.

213358044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17779844 (or 17779842 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 213358044 is about 14606.7807541566. The cubic root of 213358044 is about 597.5437025042.

The spelling of 213358044 in words is "two hundred thirteen million, three hundred fifty-eight thousand, forty-four".

Divisors: 1 2 3 4 6 12 17779837 35559674 53339511 71119348 106679022 213358044