1228529843952 has 160 divisors (see below), whose sum is σ = 3316882348800. Its totient is φ = 391433785344.

The previous prime is 1228529843917. The next prime is 1228529843993. The reversal of 1228529843952 is 2593489258221.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223082383 + ... + 223087889.

It is an arithmetic number, because the mean of its divisors is an integer number (20730514680).

Almost surely, 2^{1228529843952} is an apocalyptic number.

1228529843952 is a gapful number since it is divisible by the number (12) 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 1228529843952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658441174400).

1228529843952 is an abundant number, since it is smaller than the sum of its proper divisors (2088352504848).

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

1228529843952 is a wasteful number, since it uses less digits than its factorization.

1228529843952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7743 (or 7737 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 60.

The spelling of 1228529843952 in words is "one trillion, two hundred twenty-eight billion, five hundred twenty-nine million, eight hundred forty-three thousand, nine hundred fifty-two".