52400404 has 36 divisors (see below), whose sum is σ = 112294560. Its totient is φ = 21273840.

The previous prime is 52400401. The next prime is 52400431. The reversal of 52400404 is 40400425.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52400401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3312 + ... + 10759.

Almost surely, 2^52400404 is an apocalyptic number.

It is an amenable number.

52400404 is an abundant number, since it is smaller than the sum of its proper divisors (59894156).

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

52400404 is a wasteful number, since it uses less digits than its factorization.

52400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14108 (or 14099 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 52400404 is about 7238.8123335254. The cubic root of 52400404 is about 374.2066879699.

Adding to 52400404 its reverse (40400425), we get a palindrome (92800829).

The spelling of 52400404 in words is "fifty-two million, four hundred thousand, four hundred four".