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389880023 = 13174913593
BaseRepresentation
bin10111001111010…
…001100011010111
31000011121221211212
4113033101203113
51244302130043
6102404252035
712442632311
oct2717214327
91004557755
10389880023
111900936a5
12aa6a101b
1362a0a250
1439acc7b1
1524365018
hex173d18d7

389880023 has 16 divisors (see below), whose sum is σ = 445598496. Its totient is φ = 337935360.

The previous prime is 389880013. The next prime is 389880041. The reversal of 389880023 is 320088983.

It is a cyclic number.

It is not a de Polignac number, because 389880023 - 216 = 389814487 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 (389880013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106715 + ... + 110307.

It is an arithmetic number, because the mean of its divisors is an integer number (27849906).

Almost surely, 2389880023 is an apocalyptic number.

389880023 is a deficient number, since it is larger than the sum of its proper divisors (55718473).

389880023 is a wasteful number, since it uses less digits than its factorization.

389880023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 389880023 is about 19745.3797886999. The cubic root of 389880023 is about 730.5394292789.

The spelling of 389880023 in words is "three hundred eighty-nine million, eight hundred eighty thousand, twenty-three".

Divisors: 1 13 17 221 491 3593 6383 8347 46709 61081 108511 794053 1764163 22934119 29990771 389880023