428540008 has 16 divisors (see below), whose sum is σ = 865321380. Its totient is φ = 197787648.

The previous prime is 428539997. The next prime is 428540009. The reversal of 428540008 is 800045824.

It can be written as a sum of positive squares in 2 ways, for example, as 421152484 + 7387524 = 20522^2 + 2718^2 .

It is not an unprimeable number, because it can be changed into a prime (428540009) 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, 2060185 + ... + 2060392.

Almost surely, 2^428540008 is an apocalyptic number.

It is an amenable number.

428540008 is an abundant number, since it is smaller than the sum of its proper divisors (436781372).

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

428540008 is a wasteful number, since it uses less digits than its factorization.

428540008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120596 (or 4120592 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 428540008 is about 20701.2078874640. The cubic root of 428540008 is about 753.9290155437.

The spelling of 428540008 in words is "four hundred twenty-eight million, five hundred forty thousand, eight".