9477820 has 48 divisors (see below), whose sum is σ = 22071168. Its totient is φ = 3389760.

The previous prime is 9477799. The next prime is 9477821. The reversal of 9477820 is 287749.

It is a happy number.

9477820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9477820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9477821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14419 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (459816).

Almost surely, 2^9477820 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 9477820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11035584).

9477820 is an abundant number, since it is smaller than the sum of its proper divisors (12593348).

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

9477820 is a wasteful number, since it uses less digits than its factorization.

9477820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 9477820 is about 3078.6068277713. The cubic root of 9477820 is about 211.6262252150.

The spelling of 9477820 in words is "nine million, four hundred seventy-seven thousand, eight hundred twenty".