40326320 has 40 divisors (see below), whose sum is σ = 94242480. Its totient is φ = 16047360.

The previous prime is 40326317. The next prime is 40326331. The reversal of 40326320 is 2362304.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 40326292 and 40326301.

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, 15686 + ... + 18074.

It is an arithmetic number, because the mean of its divisors is an integer number (2356062).

Almost surely, 2^40326320 is an apocalyptic number.

40326320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40326320 is an abundant number, since it is smaller than the sum of its proper divisors (53916160).

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

40326320 is a wasteful number, since it uses less digits than its factorization.

40326320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2607 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40326320 is about 6350.3007802780. The cubic root of 40326320 is about 342.9226706764.

Adding to 40326320 its reverse (2362304), we get a palindrome (42688624).

The spelling of 40326320 in words is "forty million, three hundred twenty-six thousand, three hundred twenty".