1264020352 has 64 divisors (see below), whose sum is σ = 2882764800. Its totient is φ = 540808704.

The previous prime is 1264020341. The next prime is 1264020371. The reversal of 1264020352 is 2530204621.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987649 + ... + 988927.

It is an arithmetic number, because the mean of its divisors is an integer number (45043200).

Almost surely, 2^1264020352 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 1264020352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441382400).

1264020352 is an abundant number, since it is smaller than the sum of its proper divisors (1618744448).

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

1264020352 is a wasteful number, since it uses less digits than its factorization.

1264020352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1264020352 is about 35553.0638904722. The cubic root of 1264020352 is about 1081.2298381441.

Adding to 1264020352 its reverse (2530204621), we get a palindrome (3794224973).

The spelling of 1264020352 in words is "one billion, two hundred sixty-four million, twenty thousand, three hundred fifty-two".