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230401560 = 23351920013
BaseRepresentation
bin11011011101110…
…10011000011000
3121001112121112010
431232322120120
5432440322220
634510145520
75465244444
oct1556723030
9531477463
10230401560
11109068114
12651b22a0
133896ccac
1422857824
15153621e0
hexdbba618

230401560 has 32 divisors (see below), whose sum is σ = 691205040. Its totient is φ = 61440384.

The previous prime is 230401559. The next prime is 230401631. The reversal of 230401560 is 65104032.

It is a happy number.

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, 959887 + ... + 960126.

Almost surely, 2230401560 is an apocalyptic number.

230401560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230401560 is an abundant number, since it is smaller than the sum of its proper divisors (460803480).

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

230401560 is a wasteful number, since it uses less digits than its factorization.

230401560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920027 (or 1920023 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 230401560 is about 15178.9841557332. The cubic root of 230401560 is about 613.0489295260.

Adding to 230401560 its reverse (65104032), we get a palindrome (295505592).

The spelling of 230401560 in words is "two hundred thirty million, four hundred one thousand, five hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1920013 3840026 5760039 7680052 9600065 11520078 15360104 19200130 23040156 28800195 38400260 46080312 57600390 76800520 115200780 230401560