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47972286 = 2327137537
BaseRepresentation
bin1011011011111…
…1111110111110
310100021020121100
42312333332332
544240103121
64432113530
71121520615
oct266777676
9110236540
1047972286
112509631a
12140958a6
139c2848b
14652a87c
154329026
hex2dbffbe

47972286 has 24 divisors (see below), whose sum is σ = 105406704. Its totient is φ = 15765120.

The previous prime is 47972279. The next prime is 47972297. The reversal of 47972286 is 68227974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17491 + ... + 20046.

It is an arithmetic number, because the mean of its divisors is an integer number (4391946).

Almost surely, 247972286 is an apocalyptic number.

47972286 is an abundant number, since it is smaller than the sum of its proper divisors (57434418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47972286 is a wasteful number, since it uses less digits than its factorization.

47972286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37616 (or 37613 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 47972286 is about 6926.2028558222. The cubic root of 47972286 is about 363.3541611007.

The spelling of 47972286 in words is "forty-seven million, nine hundred seventy-two thousand, two hundred eighty-six".

Divisors: 1 2 3 6 9 18 71 142 213 426 639 1278 37537 75074 112611 225222 337833 675666 2665127 5330254 7995381 15990762 23986143 47972286