40604420 has 48 divisors (see below), whose sum is σ = 89241600. Its totient is φ = 15500160.

The previous prime is 40604411. The next prime is 40604423. The reversal of 40604420 is 2440604.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40604392 and 40604401.

It is not an unprimeable number, because it can be changed into a prime (40604423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48566 + ... + 49394.

It is an arithmetic number, because the mean of its divisors is an integer number (1859200).

Almost surely, 2^40604420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40604420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44620800).

40604420 is an abundant number, since it is smaller than the sum of its proper divisors (48637180).

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

40604420 is a wasteful number, since it uses less digits than its factorization.

40604420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40604420 is about 6372.1597594536. The cubic root of 40604420 is about 343.7091579024.

The spelling of 40604420 in words is "forty million, six hundred four thousand, four hundred twenty".