731238490 has 32 divisors (see below), whose sum is σ = 1337078160. Its totient is φ = 287898624.

The previous prime is 731238413. The next prime is 731238491. The reversal of 731238490 is 94832137.

731238490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 226472401 + 504766089 = 15049^2 + 22467^2 .

It is not an unprimeable number, because it can be changed into a prime (731238491) 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, 168994 + ... + 173266.

Almost surely, 2^731238490 is an apocalyptic number.

731238490 is a deficient number, since it is larger than the sum of its proper divisors (605839670).

731238490 is a wasteful number, since it uses less digits than its factorization.

731238490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 731238490 is about 27041.4217451672. The cubic root of 731238490 is about 900.9202480281.

The spelling of 731238490 in words is "seven hundred thirty-one million, two hundred thirty-eight thousand, four hundred ninety".