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164700580 = 22511748639
BaseRepresentation
bin10011101000100…
…10000110100100
3102110220122201111
421310102012210
5314130404310
624202034404
74036634422
oct1164220644
9373818644
10164700580
1184a72a90
12471a8a04
1328178185
1417c34112
15e6d528a
hex9d121a4

164700580 has 24 divisors (see below), whose sum is σ = 377314560. Its totient is φ = 59891040.

The previous prime is 164700553. The next prime is 164700581. The reversal of 164700580 is 85007461.

It is not an unprimeable number, because it can be changed into a prime (164700581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374100 + ... + 374539.

It is an arithmetic number, because the mean of its divisors is an integer number (15721440).

Almost surely, 2164700580 is an apocalyptic number.

164700580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164700580 is an abundant number, since it is smaller than the sum of its proper divisors (212613980).

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

164700580 is a wasteful number, since it uses less digits than its factorization.

164700580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748659 (or 748657 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 164700580 is about 12833.5723787260. The cubic root of 164700580 is about 548.1486845027.

The spelling of 164700580 in words is "one hundred sixty-four million, seven hundred thousand, five hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 748639 1497278 2994556 3743195 7486390 8235029 14972780 16470058 32940116 41175145 82350290 164700580