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47051389 = 711611057
BaseRepresentation
bin1011001101111…
…1001001111101
310021112110101001
42303133021331
544021121024
64400250301
71110634030
oct263371175
9107473331
1047051389
1124617450
1213910991
139995278
14636b017
1541e6244
hex2cdf27d

47051389 has 8 divisors (see below), whose sum is σ = 58661568. Its totient is φ = 36663360.

The previous prime is 47051387. The next prime is 47051413. The reversal of 47051389 is 98315074.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47051389 - 21 = 47051387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47051387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305452 + ... + 305605.

It is an arithmetic number, because the mean of its divisors is an integer number (7332696).

Almost surely, 247051389 is an apocalyptic number.

It is an amenable number.

47051389 is a deficient number, since it is larger than the sum of its proper divisors (11610179).

47051389 is a wasteful number, since it uses less digits than its factorization.

47051389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611075.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 47051389 is about 6859.4015045046. The cubic root of 47051389 is about 361.0140877399.

The spelling of 47051389 in words is "forty-seven million, fifty-one thousand, three hundred eighty-nine".

Divisors: 1 7 11 77 611057 4277399 6721627 47051389