505430420 has 24 divisors (see below), whose sum is σ = 1157895648. Its totient is φ = 183792800.

The previous prime is 505430407. The next prime is 505430437. The reversal of 505430420 is 24034505.

It is a super-2 number, since 2×505430420² = 510919818922752800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148486 + ... + 1148925.

It is an arithmetic number, because the mean of its divisors is an integer number (48245652).

Almost surely, 2^505430420 is an apocalyptic number.

It is an amenable number.

505430420 is an abundant number, since it is smaller than the sum of its proper divisors (652465228).

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

505430420 is a wasteful number, since it uses less digits than its factorization.

505430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297431 (or 2297429 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 505430420 is about 22481.7797338200. The cubic root of 505430420 is about 796.5636038623.

Adding to 505430420 its reverse (24034505), we get a palindrome (529464925).

The spelling of 505430420 in words is "five hundred five million, four hundred thirty thousand, four hundred twenty".