428080280 has 32 divisors (see below), whose sum is σ = 964837440. Its totient is φ = 170937600.

The previous prime is 428080267. The next prime is 428080291. The reversal of 428080280 is 82080824.

It is a super-2 number, since 2×428080280² = 366505452249756800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15137 + ... + 32943.

It is an arithmetic number, because the mean of its divisors is an integer number (30151170).

Almost surely, 2^428080280 is an apocalyptic number.

428080280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428080280 is an abundant number, since it is smaller than the sum of its proper divisors (536757160).

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

428080280 is a wasteful number, since it uses less digits than its factorization.

428080280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18419 (or 18415 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 428080280 is about 20690.1010147365. The cubic root of 428080280 is about 753.6593197641.

The spelling of 428080280 in words is "four hundred twenty-eight million, eighty thousand, two hundred eighty".