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47242811 = 721187649
BaseRepresentation
bin1011010000110…
…1111000111011
310021220011221202
42310031320323
544043232221
64404324415
71112362100
oct264157073
9107804852
1047242811
1124738250
12139a370b
139a31435
1463baaa7
154232d0b
hex2d0de3b

47242811 has 12 divisors (see below), whose sum is σ = 59952600. Its totient is φ = 36812160.

The previous prime is 47242801. The next prime is 47242817. The reversal of 47242811 is 11824274.

It is not a de Polignac number, because 47242811 - 210 = 47241787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47242817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43286 + ... + 44363.

It is an arithmetic number, because the mean of its divisors is an integer number (4996050).

Almost surely, 247242811 is an apocalyptic number.

47242811 is a deficient number, since it is larger than the sum of its proper divisors (12709789).

47242811 is a wasteful number, since it uses less digits than its factorization.

47242811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87674 (or 87667 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 47242811 is about 6873.3405997375. The cubic root of 47242811 is about 361.5030037622.

The spelling of 47242811 in words is "forty-seven million, two hundred forty-two thousand, eight hundred eleven".

Divisors: 1 7 11 49 77 539 87649 613543 964139 4294801 6748973 47242811