40306566 has 16 divisors (see below), whose sum is σ = 82488384. Its totient is φ = 13122984.

The previous prime is 40306559. The next prime is 40306571. The reversal of 40306566 is 66560304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77856 + ... + 78371.

It is an arithmetic number, because the mean of its divisors is an integer number (5155524).

Almost surely, 2^40306566 is an apocalyptic number.

40306566 is an abundant number, since it is smaller than the sum of its proper divisors (42181818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40306566 is a wasteful number, since it uses less digits than its factorization.

40306566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156275.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 40306566 is about 6348.7452303585. The cubic root of 40306566 is about 342.8666675429.

The spelling of 40306566 in words is "forty million, three hundred six thousand, five hundred sixty-six".