40278575 has 18 divisors (see below), whose sum is σ = 52724304. Its totient is φ = 30520080.

The previous prime is 40278547. The next prime is 40278583. The reversal of 40278575 is 57587204.

It is not a de Polignac number, because 40278575 - 2¹⁴ = 40262191 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 17 ways as a sum of consecutive naturals, for example, 6794 + ... + 11256.

It is an arithmetic number, because the mean of its divisors is an integer number (2929128).

Almost surely, 2^40278575 is an apocalyptic number.

40278575 is a deficient number, since it is larger than the sum of its proper divisors (12445729).

40278575 is a wasteful number, since it uses less digits than its factorization.

40278575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511 (or 4487 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 40278575 is about 6346.5403961529. The cubic root of 40278575 is about 342.7872809459.

The spelling of 40278575 in words is "forty million, two hundred seventy-eight thousand, five hundred seventy-five".