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85872054380 = 22571543397519
BaseRepresentation
bin100111111111001011…
…1111001000001101100
322012122120102100021112
41033332113321001230
52401331221220010
6103241000051152
76126663263450
oct1177627710154
9265576370245
1085872054380
1133466599492
1214786463ab8
1381368541c8
1442289a0660
152378c81a05
hex13fe5f906c

85872054380 has 48 divisors (see below), whose sum is σ = 206227015680. Its totient is φ = 29422692288.

The previous prime is 85872054349. The next prime is 85872054397. The reversal of 85872054380 is 8345027858.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17261 + ... + 414779.

It is an arithmetic number, because the mean of its divisors is an integer number (4296396160).

Almost surely, 285872054380 is an apocalyptic number.

It is an amenable number.

85872054380 is an abundant number, since it is smaller than the sum of its proper divisors (120354961300).

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

85872054380 is a wasteful number, since it uses less digits than its factorization.

85872054380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399078 (or 399076 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 85872054380 in words is "eighty-five billion, eight hundred seventy-two million, fifty-four thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1543 3086 6172 7715 10801 15430 21602 30860 43204 54005 108010 216020 397519 795038 1590076 1987595 2782633 3975190 5565266 7950380 11130532 13913165 27826330 55652660 613371817 1226743634 2453487268 3066859085 4293602719 6133718170 8587205438 12267436340 17174410876 21468013595 42936027190 85872054380