506421400 has 24 divisors (see below), whose sum is σ = 1177430220. Its totient is φ = 202568480.

The previous prime is 506421379. The next prime is 506421401. The reversal of 506421400 is 4124605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506421401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1265854 + ... + 1266253.

Almost surely, 2^506421400 is an apocalyptic number.

506421400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

506421400 is an abundant number, since it is smaller than the sum of its proper divisors (671008820).

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

506421400 is a wasteful number, since it uses less digits than its factorization.

506421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532123 (or 2532114 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 506421400 is about 22503.8085665516. The cubic root of 506421400 is about 797.0838622584.

The spelling of 506421400 in words is "five hundred six million, four hundred twenty-one thousand, four hundred".