40755280 has 20 divisors (see below), whose sum is σ = 94756212. Its totient is φ = 16302080.

The previous prime is 40755263. The next prime is 40755289. The reversal of 40755280 is 8255704.

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 20034576 = 4552^2 + 4476^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40755289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254641 + ... + 254800.

Almost surely, 2^40755280 is an apocalyptic number.

40755280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40755280 is an abundant number, since it is smaller than the sum of its proper divisors (54000932).

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

40755280 is a wasteful number, since it uses less digits than its factorization.

40755280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509454 (or 509448 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 40755280 is about 6383.9862155240. The cubic root of 40755280 is about 344.1342994639.

The spelling of 40755280 in words is "forty million, seven hundred fifty-five thousand, two hundred eighty".