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39472028285 = 531787323581
BaseRepresentation
bin100100110000101101…
…110101101001111101
310202212212120210110112
4210300231311221331
51121314314401120
630044434315405
72565103463444
oct446055655175
9122785523415
1039472028285
1115815a27088
127797128b65
133950885771
141ca6413d5b
151060495bc5
hex930b75a7d

39472028285 has 16 divisors (see below), whose sum is σ = 48956662272. Its totient is φ = 30520065600.

The previous prime is 39472028279. The next prime is 39472028293. The reversal of 39472028285 is 58282027493.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-39472028285 is a prime.

It is a Duffinian number.

It is a congruent 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, 39806 + ... + 283775.

It is an arithmetic number, because the mean of its divisors is an integer number (3059791392).

Almost surely, 239472028285 is an apocalyptic number.

It is an amenable number.

39472028285 is a deficient number, since it is larger than the sum of its proper divisors (9484633987).

39472028285 is a wasteful number, since it uses less digits than its factorization.

39472028285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324404.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 39472028285 in words is "thirty-nine billion, four hundred seventy-two million, twenty-eight thousand, two hundred eighty-five".

Divisors: 1 5 31 155 787 3935 24397 121985 323581 1617905 10031011 50155055 254658247 1273291235 7894405657 39472028285