546722220 has 96 divisors (see below), whose sum is σ = 1679118336. Its totient is φ = 131814400.

The previous prime is 546722153. The next prime is 546722221. The reversal of 546722220 is 22227645.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (546722221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123892 + ... + 128228.

It is an arithmetic number, because the mean of its divisors is an integer number (17490816).

Almost surely, 2^546722220 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 546722220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839559168).

546722220 is an abundant number, since it is smaller than the sum of its proper divisors (1132396116).

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

546722220 is a wasteful number, since it uses less digits than its factorization.

546722220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551 (or 4549 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 546722220 is about 23382.0918653571. The cubic root of 546722220 is about 817.6904175385.

Adding to 546722220 its reverse (22227645), we get a palindrome (568949865).

The spelling of 546722220 in words is "five hundred forty-six million, seven hundred twenty-two thousand, two hundred twenty".