249730 has 32 divisors (see below), whose sum is σ = 517104. Its totient is φ = 86016.

The previous prime is 249727. The next prime is 249737. The reversal of 249730 is 37942.

It can be written as a sum of positive squares in 8 ways, for example, as 27889 + 221841 = 167^2 + 471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 249695 and 249704.

It is not an unprimeable number, because it can be changed into a prime (249737) 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, 2154 + ... + 2266.

2²⁴⁹⁷³⁰ is an apocalyptic number.

249730 is an abundant number, since it is smaller than the sum of its proper divisors (267374).

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

249730 is a wasteful number, since it uses less digits than its factorization.

249730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 249730 is about 499.7299270606. The cubic root of 249730 is about 62.9733657467.

It can be divided in two parts, 249 and 730, that added together give a palindrome (979).

The spelling of 249730 in words is "two hundred forty-nine thousand, seven hundred thirty".