40282645 has 16 divisors (see below), whose sum is σ = 52602480. Its totient is φ = 29435904.

The previous prime is 40282607. The next prime is 40282651. The reversal of 40282645 is 54628204.

It can be written as a sum of positive squares in 8 ways, for example, as 15062161 + 25220484 = 3881^2 + 5022^2 .

It is a cyclic number.

It is not a de Polignac number, because 40282645 - 2¹³ = 40274453 is a prime.

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, 3111 + ... + 9499.

It is an arithmetic number, because the mean of its divisors is an integer number (3287655).

Almost surely, 2^40282645 is an apocalyptic number.

It is an amenable number.

40282645 is a deficient number, since it is larger than the sum of its proper divisors (12319835).

40282645 is a wasteful number, since it uses less digits than its factorization.

40282645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 40282645 is about 6346.8610351890. The cubic root of 40282645 is about 342.7988263497.

The spelling of 40282645 in words is "forty million, two hundred eighty-two thousand, six hundred forty-five".