Search a number
-
+
1427987181430 = 251997367719447
BaseRepresentation
bin10100110001111010101…
…010110010111101110110
312001111212212210220212001
4110301322222302331312
5141344004204301210
63012001441045514
7205111565525125
oct24617252627566
95044785726761
101427987181430
115006735999a7
121b090602689a
13a4873c87164
144d1875bdabc
152722a1e303a
hex14c7aab2f76

1427987181430 has 32 divisors (see below), whose sum is σ = 2572495713216. Its totient is φ = 570724232064.

The previous prime is 1427987181427. The next prime is 1427987181457. The reversal of 1427987181430 is 341817897241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73419967 + ... + 73439413.

It is an arithmetic number, because the mean of its divisors is an integer number (80390491038).

Almost surely, 21427987181430 is an apocalyptic number.

1427987181430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1427987181430 is a deficient number, since it is larger than the sum of its proper divisors (1144508531786).

1427987181430 is a wasteful number, since it uses less digits than its factorization.

1427987181430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25128.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 1427987181430 in words is "one trillion, four hundred twenty-seven billion, nine hundred eighty-seven million, one hundred eighty-one thousand, four hundred thirty".

Divisors: 1 2 5 10 1997 3677 3994 7354 9985 18385 19447 19970 36770 38894 97235 194470 7342969 14685938 36714845 38835659 71506619 73429690 77671318 143013238 194178295 357533095 388356590 715066190 142798718143 285597436286 713993590715 1427987181430