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38718030477 = 3713211395697
BaseRepresentation
bin100100000011110001…
…100100001010001101
310200221022210201220210
4210003301210022031
51113243303433402
625441541433033
72540316554220
oct440361441215
9120838721823
1038718030477
11154693563a5
12760670b779
1338605bb409
141c342215b7
1510191a906c
hex903c6428d

38718030477 has 16 divisors (see below), whose sum is σ = 59043608192. Its totient is φ = 22107824640.

The previous prime is 38718030469. The next prime is 38718030479. The reversal of 38718030477 is 77403081783.

It is a happy number.

It is not a de Polignac number, because 38718030477 - 23 = 38718030469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38718030479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670108 + ... + 725589.

It is an arithmetic number, because the mean of its divisors is an integer number (3690225512).

Almost surely, 238718030477 is an apocalyptic number.

It is an amenable number.

38718030477 is a deficient number, since it is larger than the sum of its proper divisors (20325577715).

38718030477 is a wasteful number, since it uses less digits than its factorization.

38718030477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397028.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 38718030477 in words is "thirty-eight billion, seven hundred eighteen million, thirty thousand, four hundred seventy-seven".

Divisors: 1 3 7 21 1321 3963 9247 27741 1395697 4187091 9769879 29309637 1843715737 5531147211 12906010159 38718030477