40247888 has 30 divisors (see below), whose sum is σ = 79075854. Its totient is φ = 19844608.

The previous prime is 40247881. The next prime is 40247899. The reversal of 40247888 is 88874204.

It can be written as a sum of positive squares in 3 ways, for example, as 153664 + 40094224 = 392^2 + 6332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40247881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204206 + ... + 204402.

Almost surely, 2^40247888 is an apocalyptic number.

It is an amenable number.

40247888 is a deficient number, since it is larger than the sum of its proper divisors (38827966).

40247888 is a wasteful number, since it uses less digits than its factorization.

40247888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 40247888 is about 6344.1223191234. The cubic root of 40247888 is about 342.7002058212.

The spelling of 40247888 in words is "forty million, two hundred forty-seven thousand, eight hundred eighty-eight".