1264597488 has 240 divisors, whose sum is σ = 4607205120. Its totient is φ = 328406400.

The previous prime is 1264597457. The next prime is 1264597489. The reversal of 1264597488 is 8847954621.

It is a happy number.

1264597488 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 597 + 48 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264597489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230133 + ... + 235563.

It is an arithmetic number, because the mean of its divisors is an integer number (19196688).

Almost surely, 2^1264597488 is an apocalyptic number.

1264597488 is a gapful number since it is divisible by the number (18) 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 1264597488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2303602560).

1264597488 is an abundant number, since it is smaller than the sum of its proper divisors (3342607632).

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

1264597488 is a wasteful number, since it uses less digits than its factorization.

1264597488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473 (or 5454 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 1264597488 is about 35561.1795079972. The cubic root of 1264597488 is about 1081.3943718122.

The spelling of 1264597488 in words is "one billion, two hundred sixty-four million, five hundred ninety-seven thousand, four hundred eighty-eight".