40649266 has 32 divisors (see below), whose sum is σ = 71792640. Its totient is φ = 16901136.

The previous prime is 40649263. The next prime is 40649267. The reversal of 40649266 is 66294604.

It is not an unprimeable number, because it can be changed into a prime (40649263) 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, 107065 + ... + 107443.

It is an arithmetic number, because the mean of its divisors is an integer number (2243520).

Almost surely, 2^40649266 is an apocalyptic number.

40649266 is a deficient number, since it is larger than the sum of its proper divisors (31143374).

40649266 is a wasteful number, since it uses less digits than its factorization.

40649266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 40649266 is about 6375.6776894696. The cubic root of 40649266 is about 343.8356491371.

The spelling of 40649266 in words is "forty million, six hundred forty-nine thousand, two hundred sixty-six".