847704420 has 96 divisors (see below), whose sum is σ = 2663082240. Its totient is φ = 223845120.

The previous prime is 847704409. The next prime is 847704433. The reversal of 847704420 is 24407748.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48000 + ... + 63240.

It is an arithmetic number, because the mean of its divisors is an integer number (27740440).

Almost surely, 2^847704420 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 847704420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331541120).

847704420 is an abundant number, since it is smaller than the sum of its proper divisors (1815377820).

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

847704420 is a wasteful number, since it uses less digits than its factorization.

847704420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15362 (or 15354 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 847704420 is about 29115.3639853600. The cubic root of 847704420 is about 946.4147114863.

The spelling of 847704420 in words is "eight hundred forty-seven million, seven hundred four thousand, four hundred twenty".