40678016 has 16 divisors (see below), whose sum is σ = 81038490. Its totient is φ = 20338944.

The previous prime is 40678013. The next prime is 40678019. The reversal of 40678016 is 61087604.

It is an interprime number because it is at equal distance from previous prime (40678013) and next prime (40678019).

It can be written as a sum of positive squares in only one way, i.e., 38440000 + 2238016 = 6200^2 + 1496^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (40678013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158771 + ... + 159026.

Almost surely, 2^40678016 is an apocalyptic number.

It is an amenable number.

40678016 is a deficient number, since it is larger than the sum of its proper divisors (40360474).

40678016 is an equidigital number, since it uses as much as digits as its factorization.

40678016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317811 (or 317799 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 40678016 is about 6377.9319532275. The cubic root of 40678016 is about 343.9166915624.

The spelling of 40678016 in words is "forty million, six hundred seventy-eight thousand, sixteen".