428089032 has 48 divisors (see below), whose sum is σ = 1325039040. Its totient is φ = 122311008.

The previous prime is 428089031. The next prime is 428089049. The reversal of 428089032 is 230980824.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (428089031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424188 + ... + 425195.

It is an arithmetic number, because the mean of its divisors is an integer number (27604980).

Almost surely, 2^428089032 is an apocalyptic number.

428089032 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428089032 is an abundant number, since it is smaller than the sum of its proper divisors (896950008).

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

428089032 is a wasteful number, since it uses less digits than its factorization.

428089032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849402 (or 849395 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 428089032 is about 20690.3125157645. The cubic root of 428089032 is about 753.6644558579.

The spelling of 428089032 in words is "four hundred twenty-eight million, eighty-nine thousand, thirty-two".