505046640 has 80 divisors (see below), whose sum is σ = 1789314048. Its totient is φ = 115438848.

The previous prime is 505046587. The next prime is 505046669. The reversal of 505046640 is 46640505.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 505046598 and 505046607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148632 + ... + 151991.

Almost surely, 2^505046640 is an apocalyptic number.

It is an amenable number.

505046640 is an abundant number, since it is smaller than the sum of its proper divisors (1284267408).

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

505046640 is a wasteful number, since it uses less digits than its factorization.

505046640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300646 (or 300640 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 505046640 is about 22473.2427566651. The cubic root of 505046640 is about 796.3619390529.

The spelling of 505046640 in words is "five hundred five million, forty-six thousand, six hundred forty".