1020072736 has 12 divisors (see below), whose sum is σ = 2008268262. Its totient is φ = 510036352.

The previous prime is 1020072733. The next prime is 1020072737. The reversal of 1020072736 is 6372700201.

It can be written as a sum of positive squares in only one way, i.e., 1007427600 + 12645136 = 31740^2 + 3556^2 .

It is not an unprimeable number, because it can be changed into a prime (1020072731) 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 as a sum of consecutive naturals, namely, 15938605 + ... + 15938668.

Almost surely, 2^1020072736 is an apocalyptic number.

1020072736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1020072736 is a deficient number, since it is larger than the sum of its proper divisors (988195526).

1020072736 is an equidigital number, since it uses as much as digits as its factorization.

1020072736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31877283 (or 31877275 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1020072736 is about 31938.5775512937. The cubic root of 1020072736 is about 1006.6466363474.

Adding to 1020072736 its reverse (6372700201), we get a palindrome (7392772937).

The spelling of 1020072736 in words is "one billion, twenty million, seventy-two thousand, seven hundred thirty-six".