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47638801 = 76805543
BaseRepresentation
bin1011010110111…
…0100100010001
310022122022011001
42311232210101
544143420201
64421022001
71115631430
oct265564421
9108568131
1047638801
1124988811
1213b54901
139b3c752
146481117
1542b0301
hex2d6e911

47638801 has 4 divisors (see below), whose sum is σ = 54444352. Its totient is φ = 40833252.

The previous prime is 47638753. The next prime is 47638807. The reversal of 47638801 is 10883674.

It is a happy number.

47638801 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10883674 = 25441837.

It is a cyclic number.

It is not a de Polignac number, because 47638801 - 223 = 39250193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47638807) 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, 3402765 + ... + 3402778.

It is an arithmetic number, because the mean of its divisors is an integer number (13611088).

Almost surely, 247638801 is an apocalyptic number.

It is an amenable number.

47638801 is a deficient number, since it is larger than the sum of its proper divisors (6805551).

47638801 is an equidigital number, since it uses as much as digits as its factorization.

47638801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6805550.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 47638801 is about 6902.0867134512. The cubic root of 47638801 is about 362.5102360962.

The spelling of 47638801 in words is "forty-seven million, six hundred thirty-eight thousand, eight hundred one".

Divisors: 1 7 6805543 47638801