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42897479824 = 241927426849
BaseRepresentation
bin100111111100111000…
…111001100010010000
311002201121011202121001
4213330320321202100
51200323223323244
631412401511344
73046016363563
oct477470714220
9132647152531
1042897479824
1117213566571
128392342554
134078450174
14210d3284da
1511b10795d4
hex9fce39890

42897479824 has 30 divisors (see below), whose sum is σ = 87718525350. Its totient is φ = 20319856128.

The previous prime is 42897479773. The next prime is 42897479827.

42897479824 is nontrivially palindromic in base 10.

42897479824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 24037401600 + 18860078224 = 155040^2 + 137332^2 .

It is not an unprimeable number, because it can be changed into a prime (42897479827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3707649 + ... + 3719200.

It is an arithmetic number, because the mean of its divisors is an integer number (2923950845).

Almost surely, 242897479824 is an apocalyptic number.

It is an amenable number.

42897479824 is an abundant number, since it is smaller than the sum of its proper divisors (44821045526).

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

42897479824 is a wasteful number, since it uses less digits than its factorization.

42897479824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426895 (or 7426870 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 64.

The spelling of 42897479824 in words is "forty-two billion, eight hundred ninety-seven million, four hundred seventy-nine thousand, eight hundred twenty-four".

Divisors: 1 2 4 8 16 19 38 76 152 304 361 722 1444 2888 5776 7426849 14853698 29707396 59414792 118829584 141110131 282220262 564440524 1128881048 2257762096 2681092489 5362184978 10724369956 21448739912 42897479824