40231288 has 8 divisors (see below), whose sum is σ = 75433680. Its totient is φ = 20115640.

The previous prime is 40231253. The next prime is 40231297. The reversal of 40231288 is 88213204.

40231288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2514448 + ... + 2514463.

It is an arithmetic number, because the mean of its divisors is an integer number (9429210).

Almost surely, 2^40231288 is an apocalyptic number.

It is an amenable number.

40231288 is a deficient number, since it is larger than the sum of its proper divisors (35202392).

40231288 is a wasteful number, since it uses less digits than its factorization.

40231288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028917 (or 5028913 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 40231288 is about 6342.8138865964. The cubic root of 40231288 is about 342.6530844608.

The spelling of 40231288 in words is "forty million, two hundred thirty-one thousand, two hundred eighty-eight".