1290012752 has 80 divisors (see below), whose sum is σ = 3017187840. Its totient is φ = 521956224.

The previous prime is 1290012749. The next prime is 1290012863. The reversal of 1290012752 is 2572100921.

It is a super-2 number, since 2×1290012752² = 3328265800645227008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737543 + ... + 739289.

It is an arithmetic number, because the mean of its divisors is an integer number (37714848).

Almost surely, 2^1290012752 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 1290012752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508593920).

1290012752 is an abundant number, since it is smaller than the sum of its proper divisors (1727175088).

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

1290012752 is a wasteful number, since it uses less digits than its factorization.

1290012752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1290012752 is about 35916.7475142168. The cubic root of 1290012752 is about 1088.5908204345.

It can be divided in two parts, 12900 and 12752, that added together give a palindrome (25652).

The spelling of 1290012752 in words is "one billion, two hundred ninety million, twelve thousand, seven hundred fifty-two".