40197678 has 8 divisors (see below), whose sum is σ = 80395368. Its totient is φ = 13399224.

The previous prime is 40197601. The next prime is 40197713. The reversal of 40197678 is 87679104.

It is a sphenic number, since it is the product of 3 distinct primes.

40197678 is an admirable number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3349801 + ... + 3349812.

It is an arithmetic number, because the mean of its divisors is an integer number (10049421).

Almost surely, 2^40197678 is an apocalyptic number.

40197678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40197678 is a wasteful number, since it uses less digits than its factorization.

40197678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699618.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 40197678 is about 6340.1638780082. The cubic root of 40197678 is about 342.5576381943.

The spelling of 40197678 in words is "forty million, one hundred ninety-seven thousand, six hundred seventy-eight".