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230308636 = 22355716187
BaseRepresentation
bin11011011101000…
…11101100011100
3121001100220001111
431232203230130
5432424334021
634504151404
75464406515
oct1556435434
9531326044
10230308636
11109004318
1265168564
13389398cc
1422831a0c
15153448e1
hexdba3b1c

230308636 has 12 divisors (see below), whose sum is σ = 403178328. Its totient is φ = 115114832.

The previous prime is 230308627. The next prime is 230308667. The reversal of 230308636 is 636803032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 230308598 and 230308607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6135 + ... + 22321.

It is an arithmetic number, because the mean of its divisors is an integer number (33598194).

Almost surely, 2230308636 is an apocalyptic number.

It is an amenable number.

230308636 is a deficient number, since it is larger than the sum of its proper divisors (172869692).

230308636 is a wasteful number, since it uses less digits than its factorization.

230308636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19748 (or 19746 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 230308636 is about 15175.9229043904. The cubic root of 230308636 is about 612.9665015266.

The spelling of 230308636 in words is "two hundred thirty million, three hundred eight thousand, six hundred thirty-six".

Divisors: 1 2 4 3557 7114 14228 16187 32374 64748 57577159 115154318 230308636