428504860 has 24 divisors (see below), whose sum is σ = 1028412000. Its totient is φ = 146915904.

The previous prime is 428504759. The next prime is 428504861. The reversal of 428504860 is 68405824.

428504860 = 7821² + 7822² + ... + 7827².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428504861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530235 + ... + 1530514.

It is an arithmetic number, because the mean of its divisors is an integer number (42850500).

Almost surely, 2^428504860 is an apocalyptic number.

It is an amenable number.

428504860 is an abundant number, since it is smaller than the sum of its proper divisors (599907140).

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

428504860 is a wasteful number, since it uses less digits than its factorization.

428504860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060765 (or 3060763 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 428504860 is about 20700.3589340861. The cubic root of 428504860 is about 753.9084030602.

The spelling of 428504860 in words is "four hundred twenty-eight million, five hundred four thousand, eight hundred sixty".