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3823128379 = 72347505237
BaseRepresentation
bin1110001111100000…
…0100111100111011
3100212102220001012101
43203320010330323
530312210102004
61431210524231
7163512024610
oct34370047473
910772801171
103823128379
111692068a34
128a8436677
1348c0a4755
14283a72507
15175988ba4
hexe3e04f3b

3823128379 has 16 divisors (see below), whose sum is σ = 4656273408. Its totient is φ = 3067792992.

The previous prime is 3823128347. The next prime is 3823128383. The reversal of 3823128379 is 9738213283.

It is not a de Polignac number, because 3823128379 - 25 = 3823128347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3823128329) 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, 245052 + ... + 260185.

It is an arithmetic number, because the mean of its divisors is an integer number (291017088).

Almost surely, 23823128379 is an apocalyptic number.

3823128379 is a deficient number, since it is larger than the sum of its proper divisors (833145029).

3823128379 is a wasteful number, since it uses less digits than its factorization.

3823128379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505314.

The product of its digits is 435456, while the sum is 46.

The square root of 3823128379 is about 61831.4513738761. The cubic root of 3823128379 is about 1563.6502809913.

The spelling of 3823128379 in words is "three billion, eight hundred twenty-three million, one hundred twenty-eight thousand, three hundred seventy-nine".

Divisors: 1 7 23 47 161 329 1081 7567 505237 3536659 11620451 23746139 81343157 166222973 546161197 3823128379