1428428680 has 32 divisors (see below), whose sum is σ = 3673103040. Its totient is φ = 489746880.

The previous prime is 1428428663. The next prime is 1428428737. The reversal of 1428428680 is 868248241.

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, 2550486 + ... + 2551045.

It is an arithmetic number, because the mean of its divisors is an integer number (114784470).

Almost surely, 2^1428428680 is an apocalyptic number.

1428428680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428428680 is an abundant number, since it is smaller than the sum of its proper divisors (2244674360).

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

1428428680 is a wasteful number, since it uses less digits than its factorization.

1428428680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101549 (or 5101545 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 43.

The square root of 1428428680 is about 37794.5588676465. The cubic root of 1428428680 is about 1126.2103661296.

The spelling of 1428428680 in words is "one billion, four hundred twenty-eight million, four hundred twenty-eight thousand, six hundred eighty".