40034478 has 32 divisors (see below), whose sum is σ = 88179840. Its totient is φ = 12016160.

The previous prime is 40034461. The next prime is 40034503. The reversal of 40034478 is 87443004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4228 + ... + 9896.

It is an arithmetic number, because the mean of its divisors is an integer number (2755620).

Almost surely, 2^40034478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40034478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44089920).

40034478 is an abundant number, since it is smaller than the sum of its proper divisors (48145362).

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

40034478 is a wasteful number, since it uses less digits than its factorization.

40034478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 40034478 is about 6327.2804584592. The cubic root of 40034478 is about 342.0934220347.

The spelling of 40034478 in words is "forty million, thirty-four thousand, four hundred seventy-eight".