40323020 has 24 divisors (see below), whose sum is σ = 84811104. Its totient is φ = 16103936.

The previous prime is 40323011. The next prime is 40323029. The reversal of 40323020 is 2032304.

It is an interprime number because it is at equal distance from previous prime (40323011) and next prime (40323029).

It is a junction number, because it is equal to n+sod(n) for n = 40322986 and 40323004.

It is not an unprimeable number, because it can be changed into a prime (40323029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16604 + ... + 18876.

It is an arithmetic number, because the mean of its divisors is an integer number (3533796).

Almost surely, 2^40323020 is an apocalyptic number.

It is an amenable number.

40323020 is an abundant number, since it is smaller than the sum of its proper divisors (44488084).

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

40323020 is a wasteful number, since it uses less digits than its factorization.

40323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169 (or 3167 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 40323020 is about 6350.0409447499. The cubic root of 40323020 is about 342.9133163582.

Adding to 40323020 its reverse (2032304), we get a palindrome (42355324).

The spelling of 40323020 in words is "forty million, three hundred twenty-three thousand, twenty".