40282785 has 32 divisors (see below), whose sum is σ = 72334080. Its totient is φ = 21268224.

The previous prime is 40282763. The next prime is 40282789. The reversal of 40282785 is 58728204.

It is a happy number.

It is not a de Polignac number, because 40282785 - 2¹³ = 40274593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40282789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12457 + ... + 15353.

It is an arithmetic number, because the mean of its divisors is an integer number (2260440).

Almost surely, 2^40282785 is an apocalyptic number.

40282785 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40282785 is a deficient number, since it is larger than the sum of its proper divisors (32051295).

40282785 is a wasteful number, since it uses less digits than its factorization.

40282785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 40282785 is about 6346.8720642534. The cubic root of 40282785 is about 342.7992234751.

The spelling of 40282785 in words is "forty million, two hundred eighty-two thousand, seven hundred eighty-five".