1026813540 has 48 divisors (see below), whose sum is σ = 2876590080. Its totient is φ = 273672960.

The previous prime is 1026813539. The next prime is 1026813563. The reversal of 1026813540 is 453186201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1026813498 and 1026813507.

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, 160605 + ... + 166875.

It is an arithmetic number, because the mean of its divisors is an integer number (59928960).

Almost surely, 2^1026813540 is an apocalyptic number.

1026813540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026813540 is an abundant number, since it is smaller than the sum of its proper divisors (1849776540).

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

1026813540 is a wasteful number, since it uses less digits than its factorization.

1026813540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9012 (or 9010 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1026813540 is about 32043.9314067422. The cubic root of 1026813540 is about 1008.8591307026.

Adding to 1026813540 its reverse (453186201), we get a palindrome (1479999741).

The spelling of 1026813540 in words is "one billion, twenty-six million, eight hundred thirteen thousand, five hundred forty".