852138404 has 48 divisors (see below), whose sum is σ = 1631565936. Its totient is φ = 387072000.

The previous prime is 852138403. The next prime is 852138433. The reversal of 852138404 is 404831258.

It can be written as a sum of positive squares in 8 ways, for example, as 11022400 + 841116004 = 3320^2 + 29002^2 .

It is a super-2 number, since 2×852138404² = 1452279719143334432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (852138403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1215254 + ... + 1215954.

It is an arithmetic number, because the mean of its divisors is an integer number (33990957).

Almost surely, 2^852138404 is an apocalyptic number.

It is an amenable number.

852138404 is a deficient number, since it is larger than the sum of its proper divisors (779427532).

852138404 is a wasteful number, since it uses less digits than its factorization.

852138404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 852138404 is about 29191.4097638329. The cubic root of 852138404 is about 948.0619414505.

The spelling of 852138404 in words is "eight hundred fifty-two million, one hundred thirty-eight thousand, four hundred four".