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47286993 = 3131212487
BaseRepresentation
bin1011010001100…
…0101011010001
310021222102120010
42310120223101
544101140433
64405305133
71112634645
oct264305321
9107872503
1047286993
1124768466
1213a051a9
139a48590
1463ccc25
154240e63
hex2d18ad1

47286993 has 8 divisors (see below), whose sum is σ = 67899328. Its totient is φ = 29099664.

The previous prime is 47286949. The next prime is 47287007. The reversal of 47286993 is 39968274.

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

It is not a de Polignac number, because 47286993 - 26 = 47286929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47286913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606205 + ... + 606282.

It is an arithmetic number, because the mean of its divisors is an integer number (8487416).

Almost surely, 247286993 is an apocalyptic number.

It is an amenable number.

47286993 is a deficient number, since it is larger than the sum of its proper divisors (20612335).

47286993 is a wasteful number, since it uses less digits than its factorization.

47286993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212503.

The product of its digits is 653184, while the sum is 48.

The square root of 47286993 is about 6876.5538607649. The cubic root of 47286993 is about 361.6156625204.

The spelling of 47286993 in words is "forty-seven million, two hundred eighty-six thousand, nine hundred ninety-three".

Divisors: 1 3 13 39 1212487 3637461 15762331 47286993