415531420 has 12 divisors (see below), whose sum is σ = 872616024. Its totient is φ = 166212560.

The previous prime is 415531399. The next prime is 415531439. The reversal of 415531420 is 24135514.

It is a happy number.

It is a super-2 number, since 2×415531420² = 345332722014432800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10388266 + ... + 10388305.

It is an arithmetic number, because the mean of its divisors is an integer number (72718002).

Almost surely, 2^415531420 is an apocalyptic number.

It is an amenable number.

415531420 is an abundant number, since it is smaller than the sum of its proper divisors (457084604).

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

415531420 is a wasteful number, since it uses less digits than its factorization.

415531420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20776580 (or 20776578 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 415531420 is about 20384.5878054966. The cubic root of 415531420 is about 746.2218407914.

Adding to 415531420 its reverse (24135514), we get a palindrome (439666934).

The spelling of 415531420 in words is "four hundred fifteen million, five hundred thirty-one thousand, four hundred twenty".