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52395972 = 223171012543
BaseRepresentation
bin1100011111011…
…1111111000100
310122120222202120
43013313333010
5101403132342
65111005540
71204233636
oct307677704
9118528676
1052395972
1127637962
12156698b0
13ab16b45
146d5ca56
1548eeaec
hex31f7fc4

52395972 has 48 divisors (see below), whose sum is σ = 130781952. Its totient is φ = 16268800.

The previous prime is 52395971. The next prime is 52396013. The reversal of 52395972 is 27959325.

It is not an unprimeable number, because it can be changed into a prime (52395971) 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 15 ways as a sum of consecutive naturals, for example, 19333 + ... + 21875.

It is an arithmetic number, because the mean of its divisors is an integer number (2724624).

Almost surely, 252395972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52395972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65390976).

52395972 is an abundant number, since it is smaller than the sum of its proper divisors (78385980).

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

52395972 is a wasteful number, since it uses less digits than its factorization.

52395972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2666 counting only the distinct ones).

The product of its digits is 170100, while the sum is 42.

The square root of 52395972 is about 7238.5061994862. The cubic root of 52395972 is about 374.1961376008.

It can be divided in two parts, 5239 and 5972, that added together give a palindrome (11211).

The spelling of 52395972 in words is "fifty-two million, three hundred ninety-five thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 17 34 51 68 101 102 202 204 303 404 606 1212 1717 2543 3434 5086 5151 6868 7629 10172 10302 15258 20604 30516 43231 86462 129693 172924 256843 259386 513686 518772 770529 1027372 1541058 3082116 4366331 8732662 13098993 17465324 26197986 52395972