1238300856 has 144 divisors (see below), whose sum is σ = 3661281000. Its totient is φ = 377904384.

The previous prime is 1238300839. The next prime is 1238300873. The reversal of 1238300856 is 6580038321.

It is an interprime number because it is at equal distance from previous prime (1238300839) and next prime (1238300873).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1238300856.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1812691 + ... + 1813373.

Almost surely, 2^1238300856 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 1238300856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830640500).

1238300856 is an abundant number, since it is smaller than the sum of its proper divisors (2422980144).

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

1238300856 is a wasteful number, since it uses less digits than its factorization.

1238300856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1238300856 is about 35189.4992291735. The cubic root of 1238300856 is about 1073.8461334040.

The spelling of 1238300856 in words is "one billion, two hundred thirty-eight million, three hundred thousand, eight hundred fifty-six".