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213208953 = 3711000981
BaseRepresentation
bin11001011010101…
…00111101111001
3112212012010200220
430231110331321
5414040141303
633053450253
75166150306
oct1455247571
9485163626
10213208953
11aa395051
125b4a0989
1335230659
14204600ad
1513ab8053
hexcb54f79

213208953 has 8 divisors (see below), whose sum is σ = 288282816. Its totient is φ = 140137200.

The previous prime is 213208943. The next prime is 213208973. The reversal of 213208953 is 359802312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213208953 - 214 = 213192569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213208943) 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 7 ways as a sum of consecutive naturals, for example, 500278 + ... + 500703.

It is an arithmetic number, because the mean of its divisors is an integer number (36035352).

Almost surely, 2213208953 is an apocalyptic number.

It is an amenable number.

213208953 is a deficient number, since it is larger than the sum of its proper divisors (75073863).

213208953 is a wasteful number, since it uses less digits than its factorization.

213208953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001055.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 213208953 is about 14601.6763763617. The cubic root of 213208953 is about 597.4044855871.

The spelling of 213208953 in words is "two hundred thirteen million, two hundred eight thousand, nine hundred fifty-three".

Divisors: 1 3 71 213 1000981 3002943 71069651 213208953