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87381825486 = 2315196447931
BaseRepresentation
bin101000101100001011…
…1001101011111001110
322100112210022122212220
41101120113031133032
52412424221403421
6104050451440210
76212255155464
oct1213027153716
9270483278786
1087381825486
11340708428aa
1214b27bb6066
138317587aa7
14432d2c8834
1524165ab3c6
hex14585cd7ce

87381825486 has 16 divisors (see below), whose sum is σ = 175921027968. Its totient is φ = 28934379000.

The previous prime is 87381825467. The next prime is 87381825521. The reversal of 87381825486 is 68452818378.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48223060 + ... + 48224871.

It is an arithmetic number, because the mean of its divisors is an integer number (10995064248).

Almost surely, 287381825486 is an apocalyptic number.

87381825486 is an abundant number, since it is smaller than the sum of its proper divisors (88539202482).

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

87381825486 is a wasteful number, since it uses less digits than its factorization.

87381825486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96448087.

The product of its digits is 20643840, while the sum is 60.

The spelling of 87381825486 in words is "eighty-seven billion, three hundred eighty-one million, eight hundred twenty-five thousand, four hundred eighty-six".

Divisors: 1 2 3 6 151 302 453 906 96447931 192895862 289343793 578687586 14563637581 29127275162 43690912743 87381825486