493540000 has 60 divisors (see below), whose sum is σ = 1214231634. Its totient is φ = 197408000.

The previous prime is 493539967. The next prime is 493540007. The reversal of 493540000 is 45394.

It can be written as a sum of positive squares in 5 ways, for example, as 43930384 + 449609616 = 6628^2 + 21204^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (493540007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7662 + ... + 32338.

Almost surely, 2^493540000 is an apocalyptic number.

493540000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 493540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607115817).

493540000 is an abundant number, since it is smaller than the sum of its proper divisors (720691634).

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

493540000 is an equidigital number, since it uses as much as digits as its factorization.

493540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24707 (or 24684 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 493540000 is about 22215.7601715539. The cubic root of 493540000 is about 790.2674947387.

Adding to 493540000 its reverse (45394), we get a palindrome (493585394).

The spelling of 493540000 in words is "four hundred ninety-three million, five hundred forty thousand".