40266505 has 8 divisors (see below), whose sum is σ = 48645000. Its totient is φ = 31996416.

The previous prime is 40266487. The next prime is 40266509. The reversal of 40266505 is 50566204.

It can be written as a sum of positive squares in 4 ways, for example, as 7054336 + 33212169 = 2656^2 + 5763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40266505 - 2²³ = 31877897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40266509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26280 + ... + 27769.

It is an arithmetic number, because the mean of its divisors is an integer number (6080625).

Almost surely, 2^40266505 is an apocalyptic number.

It is an amenable number.

40266505 is a deficient number, since it is larger than the sum of its proper divisors (8378495).

40266505 is a wasteful number, since it uses less digits than its factorization.

40266505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54203.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 40266505 is about 6345.5894131278. The cubic root of 40266505 is about 342.7530372995.

The spelling of 40266505 in words is "forty million, two hundred sixty-six thousand, five hundred five".