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38869493 = 1321271811
BaseRepresentation
bin1001010001000…
…1100111110101
32201010202220212
42110101213311
534422310433
63505035205
7651246065
oct224214765
981122825
1038869493
111aa39253
1211025b05
13808c100
14523b3a5
15362bd48
hex25119f5

38869493 has 12 divisors (see below), whose sum is σ = 42444288. Its totient is φ = 35577360.

The previous prime is 38869489. The next prime is 38869513. The reversal of 38869493 is 39496883.

38869493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38869493 - 22 = 38869489 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 (38869433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20558 + ... + 22368.

It is an arithmetic number, because the mean of its divisors is an integer number (3537024).

Almost surely, 238869493 is an apocalyptic number.

It is an amenable number.

38869493 is a deficient number, since it is larger than the sum of its proper divisors (3574795).

38869493 is a wasteful number, since it uses less digits than its factorization.

38869493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964 (or 1951 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 38869493 is about 6234.5403198632. The cubic root of 38869493 is about 338.7424507788.

The spelling of 38869493 in words is "thirty-eight million, eight hundred sixty-nine thousand, four hundred ninety-three".

Divisors: 1 13 127 169 1651 1811 21463 23543 229997 306059 2989961 38869493