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230672280 = 23351922269
BaseRepresentation
bin11011011111111…
…00011110011000
3121002001100212210
431233330132120
5433023003110
634520035120
75500452636
oct1557743630
9532040783
10230672280
11109232553
1265302aa0
1338a36297
14228c8356
15153b7520
hexdbfc798

230672280 has 32 divisors (see below), whose sum is σ = 692017200. Its totient is φ = 61512576.

The previous prime is 230672251. The next prime is 230672297. The reversal of 230672280 is 82276032.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 961015 + ... + 961254.

Almost surely, 2230672280 is an apocalyptic number.

230672280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230672280 is an abundant number, since it is smaller than the sum of its proper divisors (461344920).

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

230672280 is a wasteful number, since it uses less digits than its factorization.

230672280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922283 (or 1922279 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 230672280 is about 15187.8991305579. The cubic root of 230672280 is about 613.2889447502.

The spelling of 230672280 in words is "two hundred thirty million, six hundred seventy-two thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1922269 3844538 5766807 7689076 9611345 11533614 15378152 19222690 23067228 28834035 38445380 46134456 57668070 76890760 115336140 230672280