490731 has 8 divisors (see below), whose sum is σ = 672144. Its totient is φ = 318240.

The previous prime is 490697. The next prime is 490733. The reversal of 490731 is 137094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 490731 - 2¹³ = 482539 is a prime.

It is a super-2 number, since 2×490731² = 481633828722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (490733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2100 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (84018).

2⁴⁹⁰⁷³¹ is an apocalyptic number.

490731 is a deficient number, since it is larger than the sum of its proper divisors (181413).

490731 is a wasteful number, since it uses less digits than its factorization.

490731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 490731 is about 700.5219482643. The cubic root of 490731 is about 78.8765363042.

It can be divided in two parts, 490 and 731, that added together give a palindrome (1221).

The spelling of 490731 in words is "four hundred ninety thousand, seven hundred thirty-one".