Search a number
-
+
472887090 = 232513404177
BaseRepresentation
bin11100001011111…
…010111100110010
31012221211011010200
4130023322330302
51432024341330
6114531340030
714501321364
oct3413727462
91187734120
10472887090
11222a29085
12112451616
1376c81260
1446b38d34
152b7aea60
hex1c2faf32

472887090 has 48 divisors (see below), whose sum is σ = 1324087128. Its totient is φ = 116402688.

The previous prime is 472887031. The next prime is 472887097. The reversal of 472887090 is 90788274.

It can be written as a sum of positive squares in 4 ways, for example, as 224730081 + 248157009 = 14991^2 + 15753^2 .

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

It is not an unprimeable number, because it can be changed into a prime (472887097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200919 + ... + 203258.

Almost surely, 2472887090 is an apocalyptic number.

472887090 is an abundant number, since it is smaller than the sum of its proper divisors (851200038).

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

472887090 is a wasteful number, since it uses less digits than its factorization.

472887090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404203 (or 404200 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 472887090 is about 21745.9672123362. The cubic root of 472887090 is about 779.0867516705.

The spelling of 472887090 in words is "four hundred seventy-two million, eight hundred eighty-seven thousand, ninety".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 390 585 1170 404177 808354 1212531 2020885 2425062 3637593 4041770 5254301 6062655 7275186 10508602 12125310 15762903 18187965 26271505 31525806 36375930 47288709 52543010 78814515 94577418 157629030 236443545 472887090