1020303640 has 32 divisors (see below), whose sum is σ = 2300704560. Its totient is φ = 407228800.

The previous prime is 1020303631. The next prime is 1020303643. The reversal of 1020303640 is 463030201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020303643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9226 + ... + 46105.

Almost surely, 2^1020303640 is an apocalyptic number.

1020303640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020303640 is an abundant number, since it is smaller than the sum of its proper divisors (1280400920).

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

1020303640 is a wasteful number, since it uses less digits than its factorization.

1020303640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55803 (or 55799 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1020303640 is about 31942.1921602134. The cubic root of 1020303640 is about 1006.7225855716.

Adding to 1020303640 its reverse (463030201), we get a palindrome (1483333841).

The spelling of 1020303640 in words is "one billion, twenty million, three hundred three thousand, six hundred forty".