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38626013 = 47338161
BaseRepresentation
bin1001001101011…
…0001011011101
32200200101221002
42103112023131
534342013023
63455520045
7646213166
oct223261335
980611832
1038626013
111a892328
1210b29025
13800533a
1451b676d
1535ceb28
hex24d62dd

38626013 has 4 divisors (see below), whose sum is σ = 38638908. Its totient is φ = 38613120.

The previous prime is 38626001. The next prime is 38626033. The reversal of 38626013 is 31062683.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10355524 + 28270489 = 3218^2 + 5317^2 .

It is a cyclic number.

It is not a de Polignac number, because 38626013 - 26 = 38625949 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 (38626033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (9659727).

Almost surely, 238626013 is an apocalyptic number.

It is an amenable number.

38626013 is a deficient number, since it is larger than the sum of its proper divisors (12895).

38626013 is an equidigital number, since it uses as much as digits as its factorization.

38626013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12894.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 38626013 is about 6214.9829444657. The cubic root of 38626013 is about 338.0336701866.

Adding to 38626013 its reverse (31062683), we get a palindrome (69688696).

The spelling of 38626013 in words is "thirty-eight million, six hundred twenty-six thousand, thirteen".

Divisors: 1 4733 8161 38626013