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402130230 = 23528874643
BaseRepresentation
bin10111111110000…
…000010100110110
31001000200022222020
4113332000110312
51310421131410
6103523014010
712652023225
oct2776002466
91030608866
10402130230
11196aa0437
12b280a306
13654090a8
143b59acbc
1525484a70
hex17f80536

402130230 has 32 divisors (see below), whose sum is σ = 965654784. Its totient is φ = 107174496.

The previous prime is 402130217. The next prime is 402130243. The reversal of 402130230 is 32031204.

It is an interprime number because it is at equal distance from previous prime (402130217) and next prime (402130243).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84289 + ... + 88931.

It is an arithmetic number, because the mean of its divisors is an integer number (30176712).

Almost surely, 2402130230 is an apocalyptic number.

402130230 is an abundant number, since it is smaller than the sum of its proper divisors (563524554).

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

402130230 is a wasteful number, since it uses less digits than its factorization.

402130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 402130230 is about 20053.1850338045. The cubic root of 402130230 is about 738.1119570750. Note that the first 3 decimals are identical.

Adding to 402130230 its reverse (32031204), we get a palindrome (434161434).

The spelling of 402130230 in words is "four hundred two million, one hundred thirty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 2887 4643 5774 8661 9286 13929 14435 17322 23215 27858 28870 43305 46430 69645 86610 139290 13404341 26808682 40213023 67021705 80426046 134043410 201065115 402130230