1252128996 has 96 divisors (see below), whose sum is σ = 3309398400. Its totient is φ = 409328640.

The previous prime is 1252128991. The next prime is 1252129001. The reversal of 1252128996 is 6998212521.

It is a happy number.

1252128996 is a `hidden beast` number, since 12 + 521 + 28 + 9 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (1252128991) and next prime (1252129001).

It is not an unprimeable number, because it can be changed into a prime (1252128991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1899715 + ... + 1900373.

It is an arithmetic number, because the mean of its divisors is an integer number (34472900).

Almost surely, 2^1252128996 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 1252128996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1654699200).

1252128996 is an abundant number, since it is smaller than the sum of its proper divisors (2057269404).

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

1252128996 is a wasteful number, since it uses less digits than its factorization.

1252128996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 978 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1252128996 is about 35385.4348002112. The cubic root of 1252128996 is about 1077.8285691805.

The spelling of 1252128996 in words is "one billion, two hundred fifty-two million, one hundred twenty-eight thousand, nine hundred ninety-six".