1022239764 has 324 divisors, whose sum is σ = 3402008064. Its totient is φ = 267478848.

The previous prime is 1022239739. The next prime is 1022239847. The reversal of 1022239764 is 4679322201.

It is a tau number, because it is divible by the number of its divisors (324).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 8049069 + ... + 8049195.

Almost surely, 2^1022239764 is an apocalyptic number.

1022239764 is a gapful number since it is divisible by the number (14) 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 1022239764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701004032).

1022239764 is an abundant number, since it is smaller than the sum of its proper divisors (2379768300).

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

1022239764 is a wasteful number, since it uses less digits than its factorization.

1022239764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1022239764 is about 31972.4844827549. The cubic root of 1022239764 is about 1007.3589674249.

The spelling of 1022239764 in words is "one billion, twenty-two million, two hundred thirty-nine thousand, seven hundred sixty-four".