1038256820 has 12 divisors (see below), whose sum is σ = 2180339364. Its totient is φ = 415302720.

The previous prime is 1038256819. The next prime is 1038256831. The reversal of 1038256820 is 286528301.

It can be written as a sum of positive squares in 2 ways, for example, as 501222544 + 537034276 = 22388^2 + 23174^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25956401 + ... + 25956440.

It is an arithmetic number, because the mean of its divisors is an integer number (181694947).

Almost surely, 2^1038256820 is an apocalyptic number.

1038256820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1038256820 is an abundant number, since it is smaller than the sum of its proper divisors (1142082544).

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

1038256820 is a wasteful number, since it uses less digits than its factorization.

1038256820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51912850 (or 51912848 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1038256820 is about 32221.9927999495. The cubic root of 1038256820 is about 1012.5930234097.

The spelling of 1038256820 in words is "one billion, thirty-eight million, two hundred fifty-six thousand, eight hundred twenty".