1020772 has 6 divisors (see below), whose sum is σ = 1786358. Its totient is φ = 510384.

The previous prime is 1020757. The next prime is 1020779. The reversal of 1020772 is 2770201.

It can be written as a sum of positive squares in only one way, i.e., 933156 + 87616 = 966^2 + 296^2 .

It is not an unprimeable number, because it can be changed into a prime (1020779) 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 as a sum of consecutive naturals, namely, 127593 + ... + 127600.

2^1020772 is an apocalyptic number.

It is an amenable number.

1020772 is a deficient number, since it is larger than the sum of its proper divisors (765586).

1020772 is a wasteful number, since it uses less digits than its factorization.

1020772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255197 (or 255195 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 1020772 is about 1010.3326184975. The cubic root of 1020772 is about 100.6876603926.

Adding to 1020772 its reverse (2770201), we get a palindrome (3790973).

The spelling of 1020772 in words is "one million, twenty thousand, seven hundred seventy-two".