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47019138 = 237836523
BaseRepresentation
bin1011001101011…
…1010010000010
310021110211010120
42303113102002
544014103023
64355441110
71110441015
oct263272202
9107424116
1047019138
11245a51a1
12138b6196
13998369a
14635d37c
1541db8e3
hex2cd7482

47019138 has 8 divisors (see below), whose sum is σ = 94038288. Its totient is φ = 15673044.

The previous prime is 47019131. The next prime is 47019139. The reversal of 47019138 is 83191074.

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

47019138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 47019099 and 47019108.

It is not an unprimeable number, because it can be changed into a prime (47019131) 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, 3918256 + ... + 3918267.

It is an arithmetic number, because the mean of its divisors is an integer number (11754786).

Almost surely, 247019138 is an apocalyptic number.

47019138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

47019138 is a wasteful number, since it uses less digits than its factorization.

47019138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836528.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 47019138 is about 6857.0502404460. The cubic root of 47019138 is about 360.9315841425.

The spelling of 47019138 in words is "forty-seven million, nineteen thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 7836523 15673046 23509569 47019138