428170280 has 16 divisors (see below), whose sum is σ = 963383220. Its totient is φ = 171268096.

The previous prime is 428170271. The next prime is 428170289. The reversal of 428170280 is 82071824.

It is an interprime number because it is at equal distance from previous prime (428170271) and next prime (428170289).

It can be written as a sum of positive squares in 2 ways, for example, as 426587716 + 1582564 = 20654^2 + 1258^2 .

It is not an unprimeable number, because it can be changed into a prime (428170289) 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, 5352089 + ... + 5352168.

Almost surely, 2^428170280 is an apocalyptic number.

428170280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428170280 is an abundant number, since it is smaller than the sum of its proper divisors (535212940).

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

428170280 is a wasteful number, since it uses less digits than its factorization.

428170280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10704268 (or 10704264 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 428170280 is about 20692.2758535643. The cubic root of 428170280 is about 753.7121327441.

The spelling of 428170280 in words is "four hundred twenty-eight million, one hundred seventy thousand, two hundred eighty".