1428666580 has 48 divisors (see below), whose sum is σ = 3278330496. Its totient is φ = 518660480.

The previous prime is 1428666539. The next prime is 1428666581. The reversal of 1428666580 is 856668241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428666580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428666581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137322 + ... + 147358.

It is an arithmetic number, because the mean of its divisors is an integer number (68298552).

Almost surely, 2^1428666580 is an apocalyptic number.

1428666580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428666580 is an abundant number, since it is smaller than the sum of its proper divisors (1849663916).

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

1428666580 is a wasteful number, since it uses less digits than its factorization.

1428666580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10704 (or 10702 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 1428666580 is about 37797.7060150481. The cubic root of 1428666580 is about 1126.2728848439.

The spelling of 1428666580 in words is "one billion, four hundred twenty-eight million, six hundred sixty-six thousand, five hundred eighty".