1428745860 has 72 divisors (see below), whose sum is σ = 4439589336. Its totient is φ = 371704320.

The previous prime is 1428745859. The next prime is 1428745873. The reversal of 1428745860 is 685478241.

It can be written as a sum of positive squares in 4 ways, for example, as 10771524 + 1417974336 = 3282^2 + 37656^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89419 + ... + 104178.

It is an arithmetic number, because the mean of its divisors is an integer number (61660963).

Almost surely, 2^1428745860 is an apocalyptic number.

1428745860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428745860 is an abundant number, since it is smaller than the sum of its proper divisors (3010843476).

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

1428745860 is a wasteful number, since it uses less digits than its factorization.

1428745860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193653 (or 193648 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 1428745860 is about 37798.7547413933. The cubic root of 1428745860 is about 1126.2937176176.

The spelling of 1428745860 in words is "one billion, four hundred twenty-eight million, seven hundred forty-five thousand, eight hundred sixty".