40215436 has 6 divisors (see below), whose sum is σ = 70377020. Its totient is φ = 20107716.

The previous prime is 40215433. The next prime is 40215467. The reversal of 40215436 is 63451204.

It is a self number, because there is not a number n which added to its sum of digits gives 40215436.

It is not an unprimeable number, because it can be changed into a prime (40215433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5026926 + ... + 5026933.

Almost surely, 2^40215436 is an apocalyptic number.

It is an amenable number.

40215436 is a deficient number, since it is larger than the sum of its proper divisors (30161584).

40215436 is a wasteful number, since it uses less digits than its factorization.

40215436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053863 (or 10053861 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40215436 is about 6341.5641603630. The cubic root of 40215436 is about 342.6080742998.

The spelling of 40215436 in words is "forty million, two hundred fifteen thousand, four hundred thirty-six".