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213029830 = 25133152861
BaseRepresentation
bin11001011001010…
…01001111000110
3112211212000222201
430230221033012
5414013423310
633045545114
75164503136
oct1454511706
9484760881
10213029830
11aa282512
125b41519a
1335199c70
1420414ac6
1513a7ee3a
hexcb293c6

213029830 has 32 divisors (see below), whose sum is σ = 426279168. Its totient is φ = 76118400.

The previous prime is 213029821. The next prime is 213029849. The reversal of 213029830 is 38920312.

213029830 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 15 ways as a sum of consecutive naturals, for example, 22401 + ... + 30460.

It is an arithmetic number, because the mean of its divisors is an integer number (13321224).

Almost surely, 2213029830 is an apocalyptic number.

213029830 is an abundant number, since it is smaller than the sum of its proper divisors (213249338).

213029830 is a wasteful number, since it uses less digits than its factorization.

213029830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52912.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 213029830 is about 14595.5414425091. The cubic root of 213029830 is about 597.2371397928.

The spelling of 213029830 in words is "two hundred thirteen million, twenty-nine thousand, eight hundred thirty".

Divisors: 1 2 5 10 13 26 31 62 65 130 155 310 403 806 2015 4030 52861 105722 264305 528610 687193 1374386 1638691 3277382 3435965 6871930 8193455 16386910 21302983 42605966 106514915 213029830