40320460 has 24 divisors (see below), whose sum is σ = 87405696. Its totient is φ = 15607680.

The previous prime is 40320431. The next prime is 40320461. The reversal of 40320460 is 6402304.

It is a super-2 number, since 2×40320460² = 3251478989223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40320461) 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, 31897 + ... + 33136.

It is an arithmetic number, because the mean of its divisors is an integer number (3641904).

Almost surely, 2^40320460 is an apocalyptic number.

It is an amenable number.

40320460 is an abundant number, since it is smaller than the sum of its proper divisors (47085236).

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

40320460 is a wasteful number, since it uses less digits than its factorization.

40320460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65073 (or 65071 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40320460 is about 6349.8393680470. The cubic root of 40320460 is about 342.9060593235.

Adding to 40320460 its reverse (6402304), we get a palindrome (46722764).

The spelling of 40320460 in words is "forty million, three hundred twenty thousand, four hundred sixty".