1238820252 has 24 divisors (see below), whose sum is σ = 2891225232. Its totient is φ = 412848000.

The previous prime is 1238820241. The next prime is 1238820259. The reversal of 1238820252 is 2520288321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238820259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64752 + ... + 81672.

It is an arithmetic number, because the mean of its divisors is an integer number (120467718).

Almost surely, 2^1238820252 is an apocalyptic number.

1238820252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1238820252 is an abundant number, since it is smaller than the sum of its proper divisors (1652404980).

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

1238820252 is a wasteful number, since it uses less digits than its factorization.

1238820252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23029 (or 23027 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1238820252 is about 35196.8784411345. The cubic root of 1238820252 is about 1073.9962513177.

It can be divided in two parts, 12388 and 20252, that added together give a triangular number (32640 = T₂₅₅).

The spelling of 1238820252 in words is "one billion, two hundred thirty-eight million, eight hundred twenty thousand, two hundred fifty-two".