40278252 has 48 divisors (see below), whose sum is σ = 113066240. Its totient is φ = 10901952.

The previous prime is 40278241. The next prime is 40278257. The reversal of 40278252 is 25287204.

40278252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40278257) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11023 + ... + 14214.

Almost surely, 2^40278252 is an apocalyptic number.

40278252 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40278252 is an abundant number, since it is smaller than the sum of its proper divisors (72787988).

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

40278252 is a wasteful number, since it uses less digits than its factorization.

40278252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25270 (or 25268 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 40278252 is about 6346.5149491670. The cubic root of 40278252 is about 342.7863646557.

The spelling of 40278252 in words is "forty million, two hundred seventy-eight thousand, two hundred fifty-two".