40215006 has 48 divisors (see below), whose sum is σ = 94938480. Its totient is φ = 12228480.

The previous prime is 40214983. The next prime is 40215023. The reversal of 40215006 is 60051204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 40215006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19861 + ... + 21791.

It is an arithmetic number, because the mean of its divisors is an integer number (1977885).

Almost surely, 2^40215006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40215006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47469240).

40215006 is an abundant number, since it is smaller than the sum of its proper divisors (54723474).

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

40215006 is a wasteful number, since it uses less digits than its factorization.

40215006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2038 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40215006 is about 6341.5302569648. The cubic root of 40215006 is about 342.6068531932.

The spelling of 40215006 in words is "forty million, two hundred fifteen thousand, six".