493898578 has 32 divisors (see below), whose sum is σ = 804055680. Its totient is φ = 226800000.

The previous prime is 493898567. The next prime is 493898579. The reversal of 493898578 is 875898394.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is not an unprimeable number, because it can be changed into a prime (493898579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163078 + ... + 166078.

It is an arithmetic number, because the mean of its divisors is an integer number (25126740).

Almost surely, 2^493898578 is an apocalyptic number.

493898578 is a deficient number, since it is larger than the sum of its proper divisors (310157102).

493898578 is a wasteful number, since it uses less digits than its factorization.

493898578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154.

The product of its digits is 17418240, while the sum is 61.

The square root of 493898578 is about 22223.8290580179. The cubic root of 493898578 is about 790.4588361618.

The spelling of 493898578 in words is "four hundred ninety-three million, eight hundred ninety-eight thousand, five hundred seventy-eight".