40540285 has 16 divisors (see below), whose sum is σ = 49480704. Its totient is φ = 31882752.

The previous prime is 40540249. The next prime is 40540303. The reversal of 40540285 is 58204504.

It is a cyclic number.

It is not a de Polignac number, because 40540285 - 2¹¹ = 40538237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114669 + ... + 115021.

It is an arithmetic number, because the mean of its divisors is an integer number (3092544).

Almost surely, 2^40540285 is an apocalyptic number.

It is an amenable number.

40540285 is a deficient number, since it is larger than the sum of its proper divisors (8940419).

40540285 is a wasteful number, since it uses less digits than its factorization.

40540285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 40540285 is about 6367.1253325186. The cubic root of 40540285 is about 343.5280987702.

Adding to 40540285 its reverse (58204504), we get a palindrome (98744789).

The spelling of 40540285 in words is "forty million, five hundred forty thousand, two hundred eighty-five".