428880066 has 8 divisors (see below), whose sum is σ = 857760144. Its totient is φ = 142960020.

The previous prime is 428880059. The next prime is 428880073. The reversal of 428880066 is 660088824.

It is an interprime number because it is at equal distance from previous prime (428880059) and next prime (428880073).

It is a sphenic number, since it is the product of 3 distinct primes.

428880066 is an admirable number.

It is a super-2 number, since 2×428880066² = 367876222024328712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35740000 + ... + 35740011.

It is an arithmetic number, because the mean of its divisors is an integer number (107220018).

Almost surely, 2^428880066 is an apocalyptic number.

428880066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

428880066 is a wasteful number, since it uses less digits than its factorization.

428880066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71480016.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 428880066 is about 20709.4197407846. The cubic root of 428880066 is about 754.1283837891.

The spelling of 428880066 in words is "four hundred twenty-eight million, eight hundred eighty thousand, sixty-six".