Search a number
-
+
572520312 = 233472131973
BaseRepresentation
bin100010000111111…
…111011101111000
31110220022001020000
4202013333131320
52133031122222
6132451033000
720121225300
oct4207773570
91426261200
10572520312
11274199a91
1213b89b760
13917c6b20
1456072600
15353e09ac
hex221ff778

572520312 has 480 divisors, whose sum is σ = 2143587600. Its totient is φ = 141087744.

The previous prime is 572520253. The next prime is 572520313. The reversal of 572520312 is 213025275.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572520313) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 7842708 + ... + 7842780.

Almost surely, 2572520312 is an apocalyptic number.

572520312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 572520312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071793800).

572520312 is an abundant number, since it is smaller than the sum of its proper divisors (1571067288).

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

572520312 is a wasteful number, since it uses less digits than its factorization.

572520312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 572520312 is about 23927.3966824642. The cubic root of 572520312 is about 830.3546710864.

Adding to 572520312 its reverse (213025275), we get a palindrome (785545587).

The spelling of 572520312 in words is "five hundred seventy-two million, five hundred twenty thousand, three hundred twelve".