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86944940 = 22510939883
BaseRepresentation
bin1010010111010…
…10110010101100
320001121021000222
411023222302230
5134224214230
612343310512
72104006535
oct513526254
9201537028
1086944940
1145095025
122514b438
1315022514
14b79368c
1579766e5
hex52eacac

86944940 has 24 divisors (see below), whose sum is σ = 184264080. Its totient is φ = 34458048.

The previous prime is 86944939. The next prime is 86944943. The reversal of 86944940 is 4944968.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 86944891 and 86944900.

It is not an unprimeable number, because it can be changed into a prime (86944943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17762 + ... + 22121.

It is an arithmetic number, because the mean of its divisors is an integer number (7677670).

Almost surely, 286944940 is an apocalyptic number.

It is an amenable number.

86944940 is an abundant number, since it is smaller than the sum of its proper divisors (97319140).

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

86944940 is a wasteful number, since it uses less digits than its factorization.

86944940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40001 (or 39999 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 86944940 is about 9324.4270601469. The cubic root of 86944940 is about 443.0112660129.

The spelling of 86944940 in words is "eighty-six million, nine hundred forty-four thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 39883 79766 159532 199415 398830 797660 4347247 8694494 17388988 21736235 43472470 86944940