1026773540 has 48 divisors (see below), whose sum is σ = 2338875840. Its totient is φ = 376375680.

The previous prime is 1026773477. The next prime is 1026773551. The reversal of 1026773540 is 453776201.

It is a self number, because there is not a number n which added to its sum of digits gives 1026773540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21935 + ... + 50345.

It is an arithmetic number, because the mean of its divisors is an integer number (48726580).

Almost surely, 2^1026773540 is an apocalyptic number.

1026773540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1026773540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169437920).

1026773540 is an abundant number, since it is smaller than the sum of its proper divisors (1312102300).

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

1026773540 is a wasteful number, since it uses less digits than its factorization.

1026773540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28572 (or 28570 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 1026773540 is about 32043.3072575226. The cubic root of 1026773540 is about 1008.8460303400.

The spelling of 1026773540 in words is "one billion, twenty-six million, seven hundred seventy-three thousand, five hundred forty".