40345280 has 28 divisors (see below), whose sum is σ = 96072960. Its totient is φ = 16137984.

The previous prime is 40345273. The next prime is 40345297. The reversal of 40345280 is 8254304.

40345280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62720 + ... + 63359.

Almost surely, 2^40345280 is an apocalyptic number.

40345280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40345280 is an abundant number, since it is smaller than the sum of its proper divisors (55727680).

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

40345280 is a wasteful number, since it uses less digits than its factorization.

40345280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126096 (or 126086 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 40345280 is about 6351.7934475233. The cubic root of 40345280 is about 342.9764055996.

Adding to 40345280 its reverse (8254304), we get a palindrome (48599584).

The spelling of 40345280 in words is "forty million, three hundred forty-five thousand, two hundred eighty".