40678040 has 64 divisors (see below), whose sum is σ = 99459360. Its totient is φ = 14883840.

The previous prime is 40678019. The next prime is 40678049. The reversal of 40678040 is 4087604.

It is a junction number, because it is equal to n+sod(n) for n = 40677994 and 40678012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40678049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70955 + ... + 71525.

Almost surely, 2^40678040 is an apocalyptic number.

40678040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40678040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49729680).

40678040 is an abundant number, since it is smaller than the sum of its proper divisors (58781320).

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

40678040 is a wasteful number, since it uses less digits than its factorization.

40678040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40678040 is about 6377.9338347148. The cubic root of 40678040 is about 343.9167591993.

The spelling of 40678040 in words is "forty million, six hundred seventy-eight thousand, forty".