Search a number
-
+
308801893050 = 23452721556069
BaseRepresentation
bin1000111111001100000…
…01101111001010111010
31002112001221020112010000
410133212001233022322
520024411241034200
6353510040133430
731211253532200
oct4374601571272
91075057215100
10308801893050
11109a64688882
124ba21167276
1323173538451
1410d36109070
1580752a7300
hex47e606f2ba

308801893050 has 180 divisors, whose sum is σ = 998095975470. Its totient is φ = 70583244480.

The previous prime is 308801893013. The next prime is 308801893051. The reversal of 308801893050 is 50398108803.

It can be written as a sum of positive squares in 3 ways, for example, as 121858940889 + 186942952161 = 349083^2 + 432369^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 308801892987 and 308801893005.

It is not an unprimeable number, because it can be changed into a prime (308801893051) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 579585 + ... + 976484.

Almost surely, 2308801893050 is an apocalyptic number.

308801893050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

308801893050 is an abundant number, since it is smaller than the sum of its proper divisors (689294082420).

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

308801893050 is a wasteful number, since it uses less digits than its factorization.

308801893050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556107 (or 1556086 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 308801893050 in words is "three hundred eight billion, eight hundred one million, eight hundred ninety-three thousand, fifty".