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47287488 = 263246289
BaseRepresentation
bin1011010001100…
…0110011000000
310021222110020110
42310120303000
544101144423
64405311320
71112636253
oct264306300
9107873213
1047287488
1124768876
1213a05540
139a48881
1463cd09a
154241193
hex2d18cc0

47287488 has 28 divisors (see below), whose sum is σ = 125115320. Its totient is φ = 15762432.

The previous prime is 47287481. The next prime is 47287511. The reversal of 47287488 is 88478274.

It is a happy number.

It is a super-2 number, since 2×472874882 = 4472213042700288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (47287481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122953 + ... + 123336.

Almost surely, 247287488 is an apocalyptic number.

47287488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

47287488 is an abundant number, since it is smaller than the sum of its proper divisors (77827832).

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

47287488 is a wasteful number, since it uses less digits than its factorization.

47287488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246304 (or 246294 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

The square root of 47287488 is about 6876.5898525359. The cubic root of 47287488 is about 361.6169243129.

The spelling of 47287488 in words is "forty-seven million, two hundred eighty-seven thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 192 246289 492578 738867 985156 1477734 1970312 2955468 3940624 5910936 7881248 11821872 15762496 23643744 47287488