47821266 has 40 divisors (see below), whose sum is σ = 107871984. Its totient is φ = 15833880.

The previous prime is 47821253. The next prime is 47821283. The reversal of 47821266 is 66212874.

It is a self number, because there is not a number n which added to its sum of digits gives 47821266.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25501 + ... + 27311.

Almost surely, 2^47821266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47821266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53935992).

47821266 is an abundant number, since it is smaller than the sum of its proper divisors (60050718).

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

47821266 is a wasteful number, since it uses less digits than its factorization.

47821266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988 (or 1979 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 47821266 is about 6915.2921847164. The cubic root of 47821266 is about 362.9724724703.

The spelling of 47821266 in words is "forty-seven million, eight hundred twenty-one thousand, two hundred sixty-six".