40234478 has 16 divisors (see below), whose sum is σ = 64527840. Its totient is φ = 18748416.

The previous prime is 40234477. The next prime is 40234483. The reversal of 40234478 is 87443204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243 + ... + 9246.

It is an arithmetic number, because the mean of its divisors is an integer number (4032990).

Almost surely, 2^40234478 is an apocalyptic number.

40234478 is a deficient number, since it is larger than the sum of its proper divisors (24293362).

40234478 is a wasteful number, since it uses less digits than its factorization.

40234478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11611.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 40234478 is about 6343.0653472907. The cubic root of 40234478 is about 342.6621407162.

The spelling of 40234478 in words is "forty million, two hundred thirty-four thousand, four hundred seventy-eight".