40333290 has 32 divisors (see below), whose sum is σ = 97001280. Its totient is φ = 10733184.

The previous prime is 40333289. The next prime is 40333297. The reversal of 40333290 is 9233304.

It is a self number, because there is not a number n which added to its sum of digits gives 40333290.

It is not an unprimeable number, because it can be changed into a prime (40333297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17421 + ... + 19599.

It is an arithmetic number, because the mean of its divisors is an integer number (3031290).

Almost surely, 2^40333290 is an apocalyptic number.

40333290 is an abundant number, since it is smaller than the sum of its proper divisors (56667990).

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

40333290 is a wasteful number, since it uses less digits than its factorization.

40333290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 40333290 is about 6350.8495494697. The cubic root of 40333290 is about 342.9424264531.

Adding to 40333290 its reverse (9233304), we get a palindrome (49566594).

The spelling of 40333290 in words is "forty million, three hundred thirty-three thousand, two hundred ninety".