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230684904 = 23323203957
BaseRepresentation
bin11011011111111…
…11100011101000
3121002002000012100
431233333203220
5433023404104
634520213400
75500534512
oct1557774350
9532060170
10230684904
11109240a8a
126530a260
1338a3bc58
14228ccbb2
15153bb139
hexdbff8e8

230684904 has 24 divisors (see below), whose sum is σ = 624771810. Its totient is φ = 76894944.

The previous prime is 230684873. The next prime is 230684921. The reversal of 230684904 is 409486032.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130644900 + 100040004 = 11430^2 + 10002^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1601907 + ... + 1602050.

Almost surely, 2230684904 is an apocalyptic number.

230684904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

230684904 is an abundant number, since it is smaller than the sum of its proper divisors (394086906).

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

230684904 is a wasteful number, since it uses less digits than its factorization.

230684904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203969 (or 3203962 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 230684904 is about 15188.3147188883. The cubic root of 230684904 is about 613.3001323658.

It can be divided in two parts, 23068 and 4904, that added together give a palindrome (27972).

The spelling of 230684904 in words is "two hundred thirty million, six hundred eighty-four thousand, nine hundred four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 3203957 6407914 9611871 12815828 19223742 25631656 28835613 38447484 57671226 76894968 115342452 230684904