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152490 = 235131723
BaseRepresentation
bin100101001110101010
321202011210
4211032222
514334430
63133550
71203402
oct451652
9252153
10152490
11a4628
12742b6
1354540
143d802
15302b0
hex253aa

152490 has 64 divisors (see below), whose sum is σ = 435456. Its totient is φ = 33792.

The previous prime is 152461. The next prime is 152501. The reversal of 152490 is 94251.

152490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6619 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (6804).

2152490 is an apocalyptic number.

152490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 390×391.

It is a practical number, because each smaller number is the sum of distinct divisors of 152490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217728).

152490 is an abundant number, since it is smaller than the sum of its proper divisors (282966).

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

152490 is a wasteful number, since it uses less digits than its factorization.

152490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 152490 is about 390.4996798974. The cubic root of 152490 is about 53.4253186899.

The spelling of 152490 in words is "one hundred fifty-two thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 13 15 17 23 26 30 34 39 46 51 65 69 78 85 102 115 130 138 170 195 221 230 255 299 345 390 391 442 510 598 663 690 782 897 1105 1173 1326 1495 1794 1955 2210 2346 2990 3315 3910 4485 5083 5865 6630 8970 10166 11730 15249 25415 30498 50830 76245 152490