438028540420252 has 12 divisors (see below), whose sum is σ = 766553027339736. Its totient is φ = 219013389751760.

The previous prime is 438028540420249. The next prime is 438028540420267. The reversal of 438028540420252 is 252024045820834.

It is a junction number, because it is equal to n+sod(n) for n = 438028540420196 and 438028540420205.

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, 218994583 + ... + 220985710.

It is an arithmetic number, because the mean of its divisors is an integer number (63879418944978).

Almost surely, 2^{438028540420252} is an apocalyptic number.

It is an amenable number.

438028540420252 is a deficient number, since it is larger than the sum of its proper divisors (328524486919484).

438028540420252 is a wasteful number, since it uses less digits than its factorization.

438028540420252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440229188 (or 440229186 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 49.

The spelling of 438028540420252 in words is "four hundred thirty-eight trillion, twenty-eight billion, five hundred forty million, four hundred twenty thousand, two hundred fifty-two".