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39428663454 = 2328359944059
BaseRepresentation
bin100100101110001000…
…011010100010011110
310202202211222122002200
4210232020122202132
51121222214212304
630040245032330
72564036052405
oct445610324236
9122684878080
1039428663454
11157a34a8484
1277846b56a6
1339448b14bb
141ca076663c
15105b77be39
hex92e21a89e

39428663454 has 48 divisors (see below), whose sum is σ = 86604336000. Its totient is φ = 12962568528.

The previous prime is 39428663453. The next prime is 39428663471. The reversal of 39428663454 is 45436682493.

It is a self number, because there is not a number n which added to its sum of digits gives 39428663454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428663453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 872877 + ... + 916935.

It is an arithmetic number, because the mean of its divisors is an integer number (1804257000).

Almost surely, 239428663454 is an apocalyptic number.

39428663454 is an abundant number, since it is smaller than the sum of its proper divisors (47175672546).

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

39428663454 is a wasteful number, since it uses less digits than its factorization.

39428663454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44749 (or 44746 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 54.

The spelling of 39428663454 in words is "thirty-nine billion, four hundred twenty-eight million, six hundred sixty-three thousand, four hundred fifty-four".

Divisors: 1 2 3 6 9 18 83 166 249 498 599 747 1198 1494 1797 3594 5391 10782 44059 49717 88118 99434 132177 149151 264354 298302 396531 447453 793062 894906 3656897 7313794 10970691 21941382 26391341 32912073 52782682 65824146 79174023 158348046 237522069 475044138 2190481303 4380962606 6571443909 13142887818 19714331727 39428663454