1002257680 has 40 divisors (see below), whose sum is σ = 2334975552. Its totient is φ = 400089984.

The previous prime is 1002257677. The next prime is 1002257687. The reversal of 1002257680 is 867522001.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1002257687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27787 + ... + 52693.

Almost surely, 2^1002257680 is an apocalyptic number.

1002257680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002257680 is an abundant number, since it is smaller than the sum of its proper divisors (1332717872).

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

1002257680 is a wasteful number, since it uses less digits than its factorization.

1002257680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25423 (or 25417 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1002257680 is about 31658.4535314030. The cubic root of 1002257680 is about 1000.7519943627.

Adding to 1002257680 its reverse (867522001), we get a palindrome (1869779681).

The spelling of 1002257680 in words is "one billion, two million, two hundred fifty-seven thousand, six hundred eighty".