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1230239810 = 25123023981
BaseRepresentation
bin100100101010011…
…1111100001000010
310011201220122202102
41021110333201002
510004420133220
6322024150402
742325602662
oct11124774102
93151818672
101230239810
11581490418
122a4008402
13167b51667
14b95621a2
1573010775
hex4953f842

1230239810 has 8 divisors (see below), whose sum is σ = 2214431676. Its totient is φ = 492095920.

The previous prime is 1230239789. The next prime is 1230239821. The reversal of 1230239810 is 189320321.

It can be written as a sum of positive squares in 2 ways, for example, as 1157836729 + 72403081 = 34027^2 + 8509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12302398102 = 3026979980217672200, which contains 22 as substring.

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, 61511981 + ... + 61512000.

Almost surely, 21230239810 is an apocalyptic number.

1230239810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230239810 is a deficient number, since it is larger than the sum of its proper divisors (984191866).

1230239810 is a wasteful number, since it uses less digits than its factorization.

1230239810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123023988.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1230239810 is about 35074.7745538015. The cubic root of 1230239810 is about 1071.5108972339.

The spelling of 1230239810 in words is "one billion, two hundred thirty million, two hundred thirty-nine thousand, eight hundred ten".

Divisors: 1 2 5 10 123023981 246047962 615119905 1230239810