1020788 has 6 divisors (see below), whose sum is σ = 1786386. Its totient is φ = 510392.

The previous prime is 1020779. The next prime is 1020797. The reversal of 1020788 is 8870201.

It is an interprime number because it is at equal distance from previous prime (1020779) and next prime (1020797).

It can be written as a sum of positive squares in only one way, i.e., 574564 + 446224 = 758^2 + 668^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127595 + ... + 127602.

It is an arithmetic number, because the mean of its divisors is an integer number (297731).

2^1020788 is an apocalyptic number.

It is an amenable number.

1020788 is a deficient number, since it is larger than the sum of its proper divisors (765598).

1020788 is a wasteful number, since it uses less digits than its factorization.

1020788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255201 (or 255199 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1020788 is about 1010.3405366509. The cubic root of 1020788 is about 100.6881864631.

Adding to 1020788 its reverse (8870201), we get a palindrome (9890989).

The spelling of 1020788 in words is "one million, twenty thousand, seven hundred eighty-eight".