Search a number
-
+
297031313780 = 2251218672
BaseRepresentation
bin1000101001010000111…
…00100010100101110100
31001101200121211010211122
410110220130202211310
514331310004020110
6344242043523112
730313466336435
oct4245034424564
91041617733748
10297031313780
11104a74484413
1249697229498
1322018a8c346
141053ab6b48c
157ad6c53255
hex4528722974

297031313780 has 18 divisors (see below), whose sum is σ = 623770877394. Its totient is φ = 118811550576.

The previous prime is 297031313771. The next prime is 297031313867. The reversal of 297031313780 is 87313130792.

It can be written as a sum of positive squares in only one way, i.e., 237625051024 + 59406262756 = 487468^2 + 243734^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2376407 + ... + 2498273.

It is an arithmetic number, because the mean of its divisors is an integer number (34653937633).

Almost surely, 2297031313780 is an apocalyptic number.

297031313780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

297031313780 is an abundant number, since it is smaller than the sum of its proper divisors (326739563614).

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

297031313780 is an frugal number, since it uses more digits than its factorization.

297031313780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243743 (or 121874 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 297031313780 in words is "two hundred ninety-seven billion, thirty-one million, three hundred thirteen thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 121867 243734 487468 609335 1218670 2437340 14851565689 29703131378 59406262756 74257828445 148515656890 297031313780