40478430 has 16 divisors (see below), whose sum is σ = 97148304. Its totient is φ = 10794240.

The previous prime is 40478429. The next prime is 40478447. The reversal of 40478430 is 3487404.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1349281 = 40478430 / (4 + 0 + 4 + 7 + 8 + 4 + 3 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674611 + ... + 674670.

It is an arithmetic number, because the mean of its divisors is an integer number (6071769).

Almost surely, 2^40478430 is an apocalyptic number.

40478430 is an abundant number, since it is smaller than the sum of its proper divisors (56669874).

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

40478430 is a wasteful number, since it uses less digits than its factorization.

40478430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349291.

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

The square root of 40478430 is about 6362.2661057205. The cubic root of 40478430 is about 343.3532953067.

The spelling of 40478430 in words is "forty million, four hundred seventy-eight thousand, four hundred thirty".