252078438 has 16 divisors (see below), whose sum is σ = 509822640. Its totient is φ = 83081856.

The previous prime is 252078433. The next prime is 252078439. The reversal of 252078438 is 834870252.

252078438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 252078396 and 252078405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252078433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235495 + ... + 236562.

It is an arithmetic number, because the mean of its divisors is an integer number (31863915).

Almost surely, 2^252078438 is an apocalyptic number.

252078438 is an abundant number, since it is smaller than the sum of its proper divisors (257744202).

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

252078438 is a wasteful number, since it uses less digits than its factorization.

252078438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472151.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 252078438 is about 15876.9782389471. The cubic root of 252078438 is about 631.7014877046.

The spelling of 252078438 in words is "two hundred fifty-two million, seventy-eight thousand, four hundred thirty-eight".