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47980147 = 311154277
BaseRepresentation
bin1011011100000…
…1111001110011
310100021122101111
42313001321303
544240331042
64432214151
71121552545
oct267017163
9110248344
1047980147
11250a1216
121409a357
139c2bc27
14652d695
15432b517
hex2dc1e73

47980147 has 4 divisors (see below), whose sum is σ = 48134736. Its totient is φ = 47825560.

The previous prime is 47980133. The next prime is 47980183. The reversal of 47980147 is 74108974.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47980147 - 27 = 47980019 is a prime.

It is a super-4 number, since 4×479801474 (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47980117) 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, 76828 + ... + 77449.

It is an arithmetic number, because the mean of its divisors is an integer number (12033684).

Almost surely, 247980147 is an apocalyptic number.

47980147 is a deficient number, since it is larger than the sum of its proper divisors (154589).

47980147 is a wasteful number, since it uses less digits than its factorization.

47980147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154588.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 47980147 is about 6926.7703152335. The cubic root of 47980147 is about 363.3740070805.

The spelling of 47980147 in words is "forty-seven million, nine hundred eighty thousand, one hundred forty-seven".

Divisors: 1 311 154277 47980147