Search a number
-
+
131445060 = 22352190751
BaseRepresentation
bin1111101010110…
…11000101000100
3100011100002201120
413311123011010
5232122220220
621013153540
73154156515
oct765330504
9304302646
10131445060
116821968a
123802b8b0
1321303456
1413658a0c
15b816a40
hex7d5b144

131445060 has 24 divisors (see below), whose sum is σ = 368046336. Its totient is φ = 35052000.

The previous prime is 131445049. The next prime is 131445073. The reversal of 131445060 is 60544131.

It is a self number, because there is not a number n which added to its sum of digits gives 131445060.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095316 + ... + 1095435.

It is an arithmetic number, because the mean of its divisors is an integer number (15335264).

Almost surely, 2131445060 is an apocalyptic number.

131445060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131445060 is an abundant number, since it is smaller than the sum of its proper divisors (236601276).

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

131445060 is a wasteful number, since it uses less digits than its factorization.

131445060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190763 (or 2190761 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 131445060 is about 11464.9491930841. The cubic root of 131445060 is about 508.4498103301.

Adding to 131445060 its reverse (60544131), we get a palindrome (191989191).

The spelling of 131445060 in words is "one hundred thirty-one million, four hundred forty-five thousand, sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 2190751 4381502 6572253 8763004 10953755 13144506 21907510 26289012 32861265 43815020 65722530 131445060