47482820 has 72 divisors (see below), whose sum is σ = 125305152. Its totient is φ = 14794560.

The previous prime is 47482801. The next prime is 47482823. The reversal of 47482820 is 2828474.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (47482823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15539 + ... + 18341.

Almost surely, 2^47482820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47482820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62652576).

47482820 is an abundant number, since it is smaller than the sum of its proper divisors (77822332).

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

47482820 is a wasteful number, since it uses less digits than its factorization.

47482820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841 (or 2828 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 47482820 is about 6890.7778951291. Note that the first 3 decimals coincide. The cubic root of 47482820 is about 362.1141546517.

The spelling of 47482820 in words is "forty-seven million, four hundred eighty-two thousand, eight hundred twenty".