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47849980 = 22519125921
BaseRepresentation
bin1011011010001…
…0000111111100
310100001000211111
42312202013330
544222144410
64425331404
71120501213
oct266420774
9110030744
1047849980
1125012442
1214036b64
139bb48c9
1464d807a
154302b8a
hex2da21fc

47849980 has 24 divisors (see below), whose sum is σ = 105774480. Its totient is φ = 18132480.

The previous prime is 47849969. The next prime is 47849981. The reversal of 47849980 is 8994874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47849981) 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, 62581 + ... + 63340.

It is an arithmetic number, because the mean of its divisors is an integer number (4407270).

Almost surely, 247849980 is an apocalyptic number.

It is an amenable number.

47849980 is an abundant number, since it is smaller than the sum of its proper divisors (57924500).

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

47849980 is a wasteful number, since it uses less digits than its factorization.

47849980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125949 (or 125947 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 47849980 is about 6917.3679965721. The cubic root of 47849980 is about 363.0451061688.

The spelling of 47849980 in words is "forty-seven million, eight hundred forty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 125921 251842 503684 629605 1259210 2392499 2518420 4784998 9569996 11962495 23924990 47849980