40033785 has 16 divisors (see below), whose sum is σ = 69877440. Its totient is φ = 19410240.

The previous prime is 40033781. The next prime is 40033811. The reversal of 40033785 is 58733004.

It is not a de Polignac number, because 40033785 - 2² = 40033781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40033781) 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, 121150 + ... + 121479.

It is an arithmetic number, because the mean of its divisors is an integer number (4367340).

Almost surely, 2^40033785 is an apocalyptic number.

It is an amenable number.

40033785 is a deficient number, since it is larger than the sum of its proper divisors (29843655).

40033785 is a wasteful number, since it uses less digits than its factorization.

40033785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242648.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 40033785 is about 6327.2256953581. The cubic root of 40033785 is about 342.0914481352.

Adding to 40033785 its reverse (58733004), we get a palindrome (98766789).

The spelling of 40033785 in words is "forty million, thirty-three thousand, seven hundred eighty-five".