40302320 has 20 divisors (see below), whose sum is σ = 93703080. Its totient is φ = 16120896.

The previous prime is 40302319. The next prime is 40302323. The reversal of 40302320 is 2320304.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 40302295 and 40302304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40302323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251810 + ... + 251969.

It is an arithmetic number, because the mean of its divisors is an integer number (4685154).

Almost surely, 2^40302320 is an apocalyptic number.

40302320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40302320 is an abundant number, since it is smaller than the sum of its proper divisors (53400760).

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

40302320 is a wasteful number, since it uses less digits than its factorization.

40302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503792 (or 503786 counting only the distinct ones).

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

The square root of 40302320 is about 6348.4108247655. The cubic root of 40302320 is about 342.8546276271.

Adding to 40302320 its reverse (2320304), we get a palindrome (42622624).

The spelling of 40302320 in words is "forty million, three hundred two thousand, three hundred twenty".