40309250 has 16 divisors (see below), whose sum is σ = 75459384. Its totient is φ = 16123600.

The previous prime is 40309231. The next prime is 40309253. The reversal of 40309250 is 5290304.

It can be written as a sum of positive squares in 4 ways, for example, as 3087049 + 37222201 = 1757^2 + 6101^2 .

It is not an unprimeable number, because it can be changed into a prime (40309253) 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, 80369 + ... + 80868.

Almost surely, 2^40309250 is an apocalyptic number.

40309250 is a deficient number, since it is larger than the sum of its proper divisors (35150134).

40309250 is a wasteful number, since it uses less digits than its factorization.

40309250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161254 (or 161244 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 40309250 is about 6348.9566071915. The cubic root of 40309250 is about 342.8742778308.

Adding to 40309250 its reverse (5290304), we get a palindrome (45599554).

The spelling of 40309250 in words is "forty million, three hundred nine thousand, two hundred fifty".