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47990862 = 23213919181
BaseRepresentation
bin1011011100010…
…0100001001110
310100022012002100
42313010201032
544241201422
64432335530
71121626023
oct267044116
9110265070
1047990862
11250a9277
12140a45a6
139c33a7a
14653354a
15432e7ac
hex2dc484e

47990862 has 24 divisors (see below), whose sum is σ = 104733720. Its totient is φ = 15881040.

The previous prime is 47990861. The next prime is 47990863. The reversal of 47990862 is 26809974.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47990861) and next prime (47990863).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47990861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7089 + ... + 12092.

It is an arithmetic number, because the mean of its divisors is an integer number (4363905).

Almost surely, 247990862 is an apocalyptic number.

47990862 is an abundant number, since it is smaller than the sum of its proper divisors (56742858).

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

47990862 is a wasteful number, since it uses less digits than its factorization.

47990862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19328 (or 19325 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 47990862 is about 6927.5437205405. The cubic root of 47990862 is about 363.4010548139.

The spelling of 47990862 in words is "forty-seven million, nine hundred ninety thousand, eight hundred sixty-two".

Divisors: 1 2 3 6 9 18 139 278 417 834 1251 2502 19181 38362 57543 115086 172629 345258 2666159 5332318 7998477 15996954 23995431 47990862