1026323720 has 16 divisors (see below), whose sum is σ = 2309228460. Its totient is φ = 410529472.

The previous prime is 1026323707. The next prime is 1026323731. The reversal of 1026323720 is 273236201.

It can be written as a sum of positive squares in 2 ways, for example, as 1019780356 + 6543364 = 31934^2 + 2558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1026323720.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12829007 + ... + 12829086.

Almost surely, 2^1026323720 is an apocalyptic number.

1026323720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026323720 is an abundant number, since it is smaller than the sum of its proper divisors (1282904740).

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

1026323720 is a wasteful number, since it uses less digits than its factorization.

1026323720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25658104 (or 25658100 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 1026323720 is about 32036.2875502141. The cubic root of 1026323720 is about 1008.6986867800.

Adding to 1026323720 its reverse (273236201), we get a palindrome (1299559921).

The spelling of 1026323720 in words is "one billion, twenty-six million, three hundred twenty-three thousand, seven hundred twenty".