40631378 has 16 divisors (see below), whose sum is σ = 63322560. Its totient is φ = 19530000.

The previous prime is 40631351. The next prime is 40631387. The reversal of 40631378 is 87313604.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13163 + ... + 15953.

It is an arithmetic number, because the mean of its divisors is an integer number (3957660).

Almost surely, 2^40631378 is an apocalyptic number.

40631378 is a deficient number, since it is larger than the sum of its proper divisors (22691182).

40631378 is a wasteful number, since it uses less digits than its factorization.

40631378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40631378 is about 6374.2747038389. The cubic root of 40631378 is about 343.7852059589.

The spelling of 40631378 in words is "forty million, six hundred thirty-one thousand, three hundred seventy-eight".