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47212002 = 2322622889
BaseRepresentation
bin1011010000011…
…0010111100010
310021211121200200
42310012113202
544041241002
64403530030
71112203215
oct264062742
9107747620
1047212002
1124717092
1213989916
139a203c6
1463ad77c
154228b1c
hex2d065e2

47212002 has 12 divisors (see below), whose sum is σ = 102292710. Its totient is φ = 15737328.

The previous prime is 47211973. The next prime is 47212003. The reversal of 47212002 is 20021274.

It can be written as a sum of positive squares in only one way, i.e., 46090521 + 1121481 = 6789^2 + 1059^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2622889 = 47212002 / (4 + 7 + 2 + 1 + 2 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (47212003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1311427 + ... + 1311462.

Almost surely, 247212002 is an apocalyptic number.

47212002 is an abundant number, since it is smaller than the sum of its proper divisors (55080708).

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

47212002 is a wasteful number, since it uses less digits than its factorization.

47212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622897 (or 2622894 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 47212002 is about 6871.0990387274. The cubic root of 47212002 is about 361.4244029637.

Adding to 47212002 its reverse (20021274), we get a palindrome (67233276).

The spelling of 47212002 in words is "forty-seven million, two hundred twelve thousand, two".

Divisors: 1 2 3 6 9 18 2622889 5245778 7868667 15737334 23606001 47212002