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38811413 = 43902591
BaseRepresentation
bin1001010000001…
…1011100010101
32201000211020202
42110003130111
534413431123
63503510245
7650614544
oct224033425
981024222
1038811413
111a9a9653
1210bb8385
13806b844
14522415b
153619a28
hex2503715

38811413 has 4 divisors (see below), whose sum is σ = 39714048. Its totient is φ = 37908780.

The previous prime is 38811389. The next prime is 38811427. The reversal of 38811413 is 31411883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38811413 - 210 = 38810389 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 (38811463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451253 + ... + 451338.

It is an arithmetic number, because the mean of its divisors is an integer number (9928512).

Almost surely, 238811413 is an apocalyptic number.

It is an amenable number.

38811413 is a deficient number, since it is larger than the sum of its proper divisors (902635).

38811413 is an equidigital number, since it uses as much as digits as its factorization.

38811413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902634.

The product of its digits is 2304, while the sum is 29.

The square root of 38811413 is about 6229.8806569629. The cubic root of 38811413 is about 338.5736468539.

It can be divided in two parts, 388 and 11413, that multiplied together give a palindrome (4428244).

The spelling of 38811413 in words is "thirty-eight million, eight hundred eleven thousand, four hundred thirteen".

Divisors: 1 43 902591 38811413