40406236 has 24 divisors (see below), whose sum is σ = 80160080. Its totient is φ = 17667072.

The previous prime is 40406167. The next prime is 40406273. The reversal of 40406236 is 63260404.

It is a self number, because there is not a number n which added to its sum of digits gives 40406236.

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, 19461 + ... + 21436.

Almost surely, 2^40406236 is an apocalyptic number.

It is an amenable number.

40406236 is a deficient number, since it is larger than the sum of its proper divisors (39753844).

40406236 is a wasteful number, since it uses less digits than its factorization.

40406236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40933 (or 40931 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 40406236 is about 6356.5899663263. The cubic root of 40406236 is about 343.1490482624.

The spelling of 40406236 in words is "forty million, four hundred six thousand, two hundred thirty-six".