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385653772680 = 2335111723132611
BaseRepresentation
bin1011001110010101100…
…00011001000110001000
31100212102212121111211020
411213022300121012020
522304304331211210
6453100014432440
736601600660251
oct5471260310610
91325385544736
10385653772680
11139611556490
12628aa802720
132a4a0397537
1414946b21b28
15a0721c4770
hex59cac19188

385653772680 has 384 divisors, whose sum is σ = 1384042844160. Its totient is φ = 85151232000.

The previous prime is 385653772627. The next prime is 385653772709. The reversal of 385653772680 is 86277356583.

It is a super-2 number, since 2×3856537726802 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11809575 + ... + 11842185.

It is an arithmetic number, because the mean of its divisors is an integer number (3604278240).

Almost surely, 2385653772680 is an apocalyptic number.

385653772680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385653772680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692021422080).

385653772680 is an abundant number, since it is smaller than the sum of its proper divisors (998389071480).

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

385653772680 is a wasteful number, since it uses less digits than its factorization.

385653772680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32701 (or 32680 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 385653772680 in words is "three hundred eighty-five billion, six hundred fifty-three million, seven hundred seventy-two thousand, six hundred eighty".