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164120384 = 262564381
BaseRepresentation
bin10011100100001…
…00011101000000
3102102211011211202
421302010131000
5314003323014
624141400332
74032000041
oct1162043500
9372734752
10164120384
118470708a
1246b690a8
132800406c
1417b228c8
15e61d3de
hex9c84740

164120384 has 14 divisors (see below), whose sum is σ = 325676514. Its totient is φ = 82060160.

The previous prime is 164120357. The next prime is 164120389. The reversal of 164120384 is 483021461.

It can be written as a sum of positive squares in only one way, i.e., 91393600 + 72726784 = 9560^2 + 8528^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164120389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282127 + ... + 1282254.

Almost surely, 2164120384 is an apocalyptic number.

It is an amenable number.

164120384 is a deficient number, since it is larger than the sum of its proper divisors (161556130).

164120384 is an equidigital number, since it uses as much as digits as its factorization.

164120384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564393 (or 2564383 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 164120384 is about 12810.9478181749. The cubic root of 164120384 is about 547.5042669059.

The spelling of 164120384 in words is "one hundred sixty-four million, one hundred twenty thousand, three hundred eighty-four".

Divisors: 1 2 4 8 16 32 64 2564381 5128762 10257524 20515048 41030096 82060192 164120384