428302580 has 12 divisors (see below), whose sum is σ = 899435460. Its totient is φ = 171321024.

The previous prime is 428302577. The next prime is 428302583. The reversal of 428302580 is 85203824.

It is an interprime number because it is at equal distance from previous prime (428302577) and next prime (428302583).

It can be written as a sum of positive squares in 2 ways, for example, as 133356304 + 294946276 = 11548^2 + 17174^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428302583) 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, 10707545 + ... + 10707584.

It is an arithmetic number, because the mean of its divisors is an integer number (74952955).

Almost surely, 2^428302580 is an apocalyptic number.

It is an amenable number.

428302580 is an abundant number, since it is smaller than the sum of its proper divisors (471132880).

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

428302580 is a wasteful number, since it uses less digits than its factorization.

428302580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21415138 (or 21415136 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 428302580 is about 20695.4724517224. The cubic root of 428302580 is about 753.7897543907.

The spelling of 428302580 in words is "four hundred twenty-eight million, three hundred two thousand, five hundred eighty".