428067880 has 32 divisors (see below), whose sum is σ = 986648040. Its totient is φ = 167050240.

The previous prime is 428067817. The next prime is 428067889. The reversal of 428067880 is 88760824.

It can be written as a sum of positive squares in 4 ways, for example, as 350663076 + 77404804 = 18726^2 + 8798^2 .

It is not an unprimeable number, because it can be changed into a prime (428067889) 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, 128869 + ... + 132148.

Almost surely, 2^428067880 is an apocalyptic number.

428067880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428067880 is an abundant number, since it is smaller than the sum of its proper divisors (558580160).

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

428067880 is a wasteful number, since it uses less digits than its factorization.

428067880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261069 (or 261065 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 428067880 is about 20689.8013523572. The cubic root of 428067880 is about 753.6520427289.

The spelling of 428067880 in words is "four hundred twenty-eight million, sixty-seven thousand, eight hundred eighty".