493565840 has 40 divisors (see below), whose sum is σ = 1149509760. Its totient is φ = 197087616.

The previous prime is 493565837. The next prime is 493565861. The reversal of 493565840 is 48565394.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 493565791 and 493565800.

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, 44537 + ... + 54503.

It is an arithmetic number, because the mean of its divisors is an integer number (28737744).

Almost surely, 2^493565840 is an apocalyptic number.

493565840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

493565840 is an abundant number, since it is smaller than the sum of its proper divisors (655943920).

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

493565840 is a wasteful number, since it uses less digits than its factorization.

493565840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10599 (or 10593 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 493565840 is about 22216.3417330577. The cubic root of 493565840 is about 790.2812863636.

The spelling of 493565840 in words is "four hundred ninety-three million, five hundred sixty-five thousand, eight hundred forty".