428285472 has 24 divisors (see below), whose sum is σ = 1124249616. Its totient is φ = 142761792.

The previous prime is 428285449. The next prime is 428285477. The reversal of 428285472 is 274582824.

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

It is not an unprimeable number, because it can be changed into a prime (428285477) 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, 2230558 + ... + 2230749.

It is an arithmetic number, because the mean of its divisors is an integer number (46843734).

Almost surely, 2^428285472 is an apocalyptic number.

It is an amenable number.

428285472 is an abundant number, since it is smaller than the sum of its proper divisors (695964144).

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

428285472 is a wasteful number, since it uses less digits than its factorization.

428285472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461320 (or 4461312 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 428285472 is about 20695.0591204761. The cubic root of 428285472 is about 753.7797178672.

The spelling of 428285472 in words is "four hundred twenty-eight million, two hundred eighty-five thousand, four hundred seventy-two".