40678407 has 24 divisors (see below), whose sum is σ = 73257600. Its totient is φ = 21131280.

The previous prime is 40678397. The next prime is 40678409. The reversal of 40678407 is 70487604.

It is a happy number.

It is not a de Polignac number, because 40678407 - 2⁷ = 40678279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40678409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28657 + ... + 30042.

It is an arithmetic number, because the mean of its divisors is an integer number (3052400).

Almost surely, 2^40678407 is an apocalyptic number.

40678407 is a deficient number, since it is larger than the sum of its proper divisors (32579193).

40678407 is a wasteful number, since it uses less digits than its factorization.

40678407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58723 (or 58720 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 40678407 is about 6377.9626057229. The cubic root of 40678407 is about 343.9177934762.

The spelling of 40678407 in words is "forty million, six hundred seventy-eight thousand, four hundred seven".