40204458 has 128 divisors (see below), whose sum is σ = 109117440. Its totient is φ = 10730880.

The previous prime is 40204457. The next prime is 40204487. The reversal of 40204458 is 85440204.

40204458 is a `hidden beast` number, since 4 + 0 + 204 + 458 = 666.

40204458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40204457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 550710 + ... + 550782.

It is an arithmetic number, because the mean of its divisors is an integer number (852480).

Almost surely, 2^40204458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40204458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54558720).

40204458 is an abundant number, since it is smaller than the sum of its proper divisors (68912982).

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

40204458 is a wasteful number, since it uses less digits than its factorization.

40204458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 40204458 is about 6340.6985419589. The cubic root of 40204458 is about 342.5768964395.

The spelling of 40204458 in words is "forty million, two hundred four thousand, four hundred fifty-eight".