505423432 has 8 divisors (see below), whose sum is σ = 947668950. Its totient is φ = 252711712.

The previous prime is 505423417. The next prime is 505423433. The reversal of 505423432 is 234324505.

It can be written as a sum of positive squares in only one way, i.e., 258116356 + 247307076 = 16066^2 + 15726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×505423432² = 510905691229317248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505423432.

It is not an unprimeable number, because it can be changed into a prime (505423433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31588957 + ... + 31588972.

Almost surely, 2^505423432 is an apocalyptic number.

It is an amenable number.

505423432 is a deficient number, since it is larger than the sum of its proper divisors (442245518).

505423432 is a wasteful number, since it uses less digits than its factorization.

505423432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63177935 (or 63177931 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 505423432 is about 22481.6243185407. The cubic root of 505423432 is about 796.5599327918.

Adding to 505423432 its reverse (234324505), we get a palindrome (739747937).

The spelling of 505423432 in words is "five hundred five million, four hundred twenty-three thousand, four hundred thirty-two".