40281288 has 32 divisors (see below), whose sum is σ = 101446560. Its totient is φ = 13328000.

The previous prime is 40281281. The next prime is 40281301. The reversal of 40281288 is 88218204.

It is not an unprimeable number, because it can be changed into a prime (40281281) 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 7 ways as a sum of consecutive naturals, for example, 2838 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (3170205).

Almost surely, 2^40281288 is an apocalyptic number.

It is an amenable number.

40281288 is an abundant number, since it is smaller than the sum of its proper divisors (61165272).

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

40281288 is a wasteful number, since it uses less digits than its factorization.

40281288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12397 (or 12393 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 40281288 is about 6346.7541310500. The cubic root of 40281288 is about 342.7949770226.

The spelling of 40281288 in words is "forty million, two hundred eighty-one thousand, two hundred eighty-eight".