428619580 has 12 divisors (see below), whose sum is σ = 900101160. Its totient is φ = 171447824.

The previous prime is 428619557. The next prime is 428619593. The reversal of 428619580 is 85916824.

It is a happy number.

It is a congruent number.

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, 10715470 + ... + 10715509.

It is an arithmetic number, because the mean of its divisors is an integer number (75008430).

Almost surely, 2^428619580 is an apocalyptic number.

It is an amenable number.

428619580 is an abundant number, since it is smaller than the sum of its proper divisors (471481580).

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

428619580 is a wasteful number, since it uses less digits than its factorization.

428619580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21430988 (or 21430986 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 428619580 is about 20703.1297150938. The cubic root of 428619580 is about 753.9756762411.

It can be divided in two parts, 42861 and 9580, that added together give a square (52441 = 229²).

The spelling of 428619580 in words is "four hundred twenty-eight million, six hundred nineteen thousand, five hundred eighty".