546821920 has 48 divisors (see below), whose sum is σ = 1323391608. Its totient is φ = 213391360.

The previous prime is 546821917. The next prime is 546821921. The reversal of 546821920 is 29128645.

It can be written as a sum of positive squares in 4 ways, for example, as 334012176 + 212809744 = 18276^2 + 14588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 546821920.

It is not an unprimeable number, because it can be changed into a prime (546821921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35119 + ... + 48238.

Almost surely, 2^546821920 is an apocalyptic number.

It is an amenable number.

546821920 is an abundant number, since it is smaller than the sum of its proper divisors (776569688).

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

546821920 is a wasteful number, since it uses less digits than its factorization.

546821920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83413 (or 83405 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 546821920 is about 23384.2237416597. The cubic root of 546821920 is about 817.7401190607.

The spelling of 546821920 in words is "five hundred forty-six million, eight hundred twenty-one thousand, nine hundred twenty".