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38148823 = 257148439
BaseRepresentation
bin1001000110000…
…1101011010111
32122210011100101
42101201223113
534231230243
63441354531
7642155026
oct221415327
978704311
1038148823
111a596859
1210938a47
137b9908b
1450d08bd
15353854d
hex2461ad7

38148823 has 4 divisors (see below), whose sum is σ = 38297520. Its totient is φ = 38000128.

The previous prime is 38148821. The next prime is 38148889. The reversal of 38148823 is 32884183.

38148823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32884183 = 51476389.

It is a cyclic number.

It is not a de Polignac number, because 38148823 - 21 = 38148821 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 (38148821) 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 3 ways as a sum of consecutive naturals, for example, 73963 + ... + 74476.

It is an arithmetic number, because the mean of its divisors is an integer number (9574380).

Almost surely, 238148823 is an apocalyptic number.

38148823 is a deficient number, since it is larger than the sum of its proper divisors (148697).

38148823 is a wasteful number, since it uses less digits than its factorization.

38148823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148696.

The product of its digits is 36864, while the sum is 37.

The square root of 38148823 is about 6176.4733464980. The cubic root of 38148823 is about 336.6358630554.

The spelling of 38148823 in words is "thirty-eight million, one hundred forty-eight thousand, eight hundred twenty-three".

Divisors: 1 257 148439 38148823