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38697061 = 132976697
BaseRepresentation
bin1001001110011…
…1100001100101
32200211000101111
42103213201211
534401301221
63501225021
7646630264
oct223474145
980730344
1038697061
111a930747
1210b62171
13802b790
1451d45db
1535e5be1
hex24e7865

38697061 has 4 divisors (see below), whose sum is σ = 41673772. Its totient is φ = 35720352.

The previous prime is 38697047. The next prime is 38697089. The reversal of 38697061 is 16079683.

38697061 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: 16079683 = 59272537.

It can be written as a sum of positive squares in 2 ways, for example, as 22944100 + 15752961 = 4790^2 + 3969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38697061 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 (38697011) 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, 1488336 + ... + 1488361.

It is an arithmetic number, because the mean of its divisors is an integer number (10418443).

Almost surely, 238697061 is an apocalyptic number.

It is an amenable number.

38697061 is a deficient number, since it is larger than the sum of its proper divisors (2976711).

38697061 is a wasteful number, since it uses less digits than its factorization.

38697061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976710.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 38697061 is about 6220.6961829043. The cubic root of 38697061 is about 338.2408009440.

The spelling of 38697061 in words is "thirty-eight million, six hundred ninety-seven thousand, sixty-one".

Divisors: 1 13 2976697 38697061