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164490 = 2355483
BaseRepresentation
bin101000001010001010
322100122020
4220022022
520230430
63305310
71253364
oct501212
9270566
10164490
11102647
127b236
1359b41
1443d34
1533b10
hex2828a

164490 has 16 divisors (see below), whose sum is σ = 394848. Its totient is φ = 43856.

The previous prime is 164477. The next prime is 164503. The reversal of 164490 is 94461.

164490 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (164477) and next prime (164503).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164490.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 164490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2712 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (24678).

2164490 is an apocalyptic number.

164490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164490 is an abundant number, since it is smaller than the sum of its proper divisors (230358).

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

164490 is a wasteful number, since it uses less digits than its factorization.

164490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 164490 is about 405.5736677843. The cubic root of 164490 is about 54.7914970735.

The spelling of 164490 in words is "one hundred sixty-four thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 5483 10966 16449 27415 32898 54830 82245 164490