505678944 has 48 divisors (see below), whose sum is σ = 1370234880. Its totient is φ = 163121280.

The previous prime is 505678933. The next prime is 505678951. The reversal of 505678944 is 449876505.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×505678944² = 511422388809910272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 505678893 and 505678902.

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, 81984 + ... + 87935.

It is an arithmetic number, because the mean of its divisors is an integer number (28546560).

Almost surely, 2^505678944 is an apocalyptic number.

It is an amenable number.

505678944 is an abundant number, since it is smaller than the sum of its proper divisors (864555936).

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

505678944 is a wasteful number, since it uses less digits than its factorization.

505678944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169963 (or 169955 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 505678944 is about 22487.3062859917. The cubic root of 505678944 is about 796.6941412730.

The spelling of 505678944 in words is "five hundred five million, six hundred seventy-eight thousand, nine hundred forty-four".