40478830 has 32 divisors (see below), whose sum is σ = 83851200. Its totient is φ = 13781760.

The previous prime is 40478813. The next prime is 40478831. The reversal of 40478830 is 3887404.

40478830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40478831) 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 15 ways as a sum of consecutive naturals, for example, 8490 + ... + 12370.

It is an arithmetic number, because the mean of its divisors is an integer number (2620350).

Almost surely, 2^40478830 is an apocalyptic number.

40478830 is an abundant number, since it is smaller than the sum of its proper divisors (43372370).

40478830 is a wasteful number, since it uses less digits than its factorization.

40478830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 40478830 is about 6362.2975409831. The cubic root of 40478830 is about 343.3544262866.

The spelling of 40478830 in words is "forty million, four hundred seventy-eight thousand, eight hundred thirty".