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164916830 = 25131774623
BaseRepresentation
bin10011101010001…
…10111001011110
3102111022122100202
421311012321132
5314204314310
624210423502
74041525041
oct1165067136
9374278322
10164916830
1185100501
1247291b92
1328222730
1417c8cc58
15e7293a5
hex9d46e5e

164916830 has 32 divisors (see below), whose sum is σ = 338494464. Its totient is φ = 57309696.

The previous prime is 164916821. The next prime is 164916839. The reversal of 164916830 is 38619461.

It is an interprime number because it is at equal distance from previous prime (164916821) and next prime (164916839).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164916839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35102 + ... + 39521.

It is an arithmetic number, because the mean of its divisors is an integer number (10577952).

Almost surely, 2164916830 is an apocalyptic number.

164916830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164916830 is an abundant number, since it is smaller than the sum of its proper divisors (173577634).

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

164916830 is a wasteful number, since it uses less digits than its factorization.

164916830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74660.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 164916830 is about 12841.9947827431. The cubic root of 164916830 is about 548.3884839244.

The spelling of 164916830 in words is "one hundred sixty-four million, nine hundred sixteen thousand, eight hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 74623 149246 373115 746230 970099 1268591 1940198 2537182 4850495 6342955 9700990 12685910 16491683 32983366 82458415 164916830