1026247764 has 48 divisors (see below), whose sum is σ = 2513250432. Its totient is φ = 325302912.

The previous prime is 1026247763. The next prime is 1026247771. The reversal of 1026247764 is 4677426201.

1026247764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1026247764² = 2106368946229999392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026247763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37002 + ... + 58494.

It is an arithmetic number, because the mean of its divisors is an integer number (52359384).

Almost surely, 2^1026247764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1026247764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1256625216).

1026247764 is an abundant number, since it is smaller than the sum of its proper divisors (1487002668).

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

1026247764 is a wasteful number, since it uses less digits than its factorization.

1026247764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21696 (or 21694 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 1026247764 is about 32035.1020600840. The cubic root of 1026247764 is about 1008.6738022963.

The spelling of 1026247764 in words is "one billion, twenty-six million, two hundred forty-seven thousand, seven hundred sixty-four".