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1230013230 = 23571577471
BaseRepresentation
bin100100101010000…
…1000001100101110
310011201111010221120
41021110020030232
510004340410410
6322015241410
742323640255
oct11124101456
93151433846
101230013230
11581346166
122a3b19266
13167aa24a4
14b950379c
1572eb8570
hex4950832e

1230013230 has 32 divisors (see below), whose sum is σ = 2993614848. Its totient is φ = 323383200.

The previous prime is 1230013217. The next prime is 1230013231. The reversal of 1230013230 is 323100321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230013231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286606 + ... + 290865.

It is an arithmetic number, because the mean of its divisors is an integer number (93550464).

Almost surely, 21230013230 is an apocalyptic number.

1230013230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230013230 is an abundant number, since it is smaller than the sum of its proper divisors (1763601618).

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

1230013230 is a wasteful number, since it uses less digits than its factorization.

1230013230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577552.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1230013230 is about 35071.5444484556. The cubic root of 1230013230 is about 1071.4451111859.

Adding to 1230013230 its reverse (323100321), we get a palindrome (1553113551).

The spelling of 1230013230 in words is "one billion, two hundred thirty million, thirteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 71 142 213 355 426 710 1065 2130 577471 1154942 1732413 2887355 3464826 5774710 8662065 17324130 41000441 82000882 123001323 205002205 246002646 410004410 615006615 1230013230