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1381000030 = 25844716349
BaseRepresentation
bin101001001010000…
…0110001101011110
310120020121001220021
41102110012031132
510312014000110
6345011342354
746136210104
oct12224061536
93506531807
101381000030
116495a1843
123265b19ba
131901585a7
14d15a7c74
15813902da
hex5250635e

1381000030 has 16 divisors (see below), whose sum is σ = 2486246400. Its totient is φ = 552300832.

The previous prime is 1381000021. The next prime is 1381000031. The reversal of 1381000030 is 300001831.

It is a super-2 number, since 2×13810000302 = 3814322165720001800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1380999968 and 1381000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381000031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76296 + ... + 92644.

It is an arithmetic number, because the mean of its divisors is an integer number (155390400).

Almost surely, 21381000030 is an apocalyptic number.

1381000030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381000030 is a deficient number, since it is larger than the sum of its proper divisors (1105246370).

1381000030 is a wasteful number, since it uses less digits than its factorization.

1381000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24803.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1381000030 is about 37161.8087557643. The cubic root of 1381000030 is about 1113.6051464610.

Adding to 1381000030 its reverse (300001831), we get a palindrome (1681001861).

The spelling of 1381000030 in words is "one billion, three hundred eighty-one million, thirty", and thus it is an aban number.

Divisors: 1 2 5 10 8447 16349 16894 32698 42235 81745 84470 163490 138100003 276200006 690500015 1381000030