428120544 has 24 divisors (see below), whose sum is σ = 1123816680. Its totient is φ = 142706816.

The previous prime is 428120519. The next prime is 428120549. The reversal of 428120544 is 445021824.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428120549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229699 + ... + 2229890.

It is an arithmetic number, because the mean of its divisors is an integer number (46825695).

Almost surely, 2^428120544 is an apocalyptic number.

It is an amenable number.

428120544 is an abundant number, since it is smaller than the sum of its proper divisors (695696136).

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

428120544 is a wasteful number, since it uses less digits than its factorization.

428120544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459602 (or 4459594 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 428120544 is about 20691.0740175565. The cubic root of 428120544 is about 753.6829480327.

The spelling of 428120544 in words is "four hundred twenty-eight million, one hundred twenty thousand, five hundred forty-four".