1252328656 has 20 divisors (see below), whose sum is σ = 2531882592. Its totient is φ = 598939616.

The previous prime is 1252328653. The next prime is 1252328659. The reversal of 1252328656 is 6568232521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1252328653) and next prime (1252328659).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252328653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701166 + ... + 1701901.

Almost surely, 2^1252328656 is an apocalyptic number.

1252328656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1252328656 is an abundant number, since it is smaller than the sum of its proper divisors (1279553936).

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

1252328656 is a wasteful number, since it uses less digits than its factorization.

1252328656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403098 (or 3403092 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 1252328656 is about 35388.2559050315. The cubic root of 1252328656 is about 1077.8858550287.

The spelling of 1252328656 in words is "one billion, two hundred fifty-two million, three hundred twenty-eight thousand, six hundred fifty-six".