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230106840 = 23351917557
BaseRepresentation
bin11011011011100…
…10011011011000
3121000222122020120
431231302123120
5432401404330
634455553240
75462606265
oct1555623330
9530878216
10230106840
11108986747
126508b820
1338898ac2
14227bc26c
1515304c10
hexdb726d8

230106840 has 32 divisors (see below), whose sum is σ = 690320880. Its totient is φ = 61361792.

The previous prime is 230106829. The next prime is 230106847. The reversal of 230106840 is 48601032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 230106840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230106847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958659 + ... + 958898.

Almost surely, 2230106840 is an apocalyptic number.

230106840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230106840 is an abundant number, since it is smaller than the sum of its proper divisors (460214040).

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

230106840 is a wasteful number, since it uses less digits than its factorization.

230106840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917571 (or 1917567 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 230106840 is about 15169.2728896279. The cubic root of 230106840 is about 612.7874225093.

Adding to 230106840 its reverse (48601032), we get a palindrome (278707872).

The spelling of 230106840 in words is "two hundred thirty million, one hundred six thousand, eight hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1917557 3835114 5752671 7670228 9587785 11505342 15340456 19175570 23010684 28763355 38351140 46021368 57526710 76702280 115053420 230106840