1428587140 has 24 divisors (see below), whose sum is σ = 3010721112. Its totient is φ = 569399040.

The previous prime is 1428587107. The next prime is 1428587141. The reversal of 1428587140 is 417858241.

It can be written as a sum of positive squares in 4 ways, for example, as 956484 + 1427630656 = 978^2 + 37784^2 .

It is a super-2 number, since 2×1428587140² = 4081722433146759200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1428587093 and 1428587102.

It is not an unprimeable number, because it can be changed into a prime (1428587141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121479 + ... + 132718.

It is an arithmetic number, because the mean of its divisors is an integer number (125446713).

Almost surely, 2^1428587140 is an apocalyptic number.

1428587140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428587140 is an abundant number, since it is smaller than the sum of its proper divisors (1582133972).

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

1428587140 is a wasteful number, since it uses less digits than its factorization.

1428587140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254487 (or 254485 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 1428587140 is about 37796.6551430150. The cubic root of 1428587140 is about 1126.2520092532.

The spelling of 1428587140 in words is "one billion, four hundred twenty-eight million, five hundred eighty-seven thousand, one hundred forty".