40155266 has 4 divisors (see below), whose sum is σ = 60232902. Its totient is φ = 20077632.

The previous prime is 40155259. The next prime is 40155289. The reversal of 40155266 is 66255104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31125241 + 9030025 = 5579^2 + 3005^2 .

It is a super-2 number, since 2×40155266² = 3224890775061512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038815 + ... + 10038818.

Almost surely, 2^40155266 is an apocalyptic number.

40155266 is a deficient number, since it is larger than the sum of its proper divisors (20077636).

40155266 is a wasteful number, since it uses less digits than its factorization.

40155266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20077635.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40155266 is about 6336.8182868061. The cubic root of 40155266 is about 342.4371198966.

The spelling of 40155266 in words is "forty million, one hundred fifty-five thousand, two hundred sixty-six".