40278080 has 56 divisors (see below), whose sum is σ = 96560640. Its totient is φ = 16002560.

The previous prime is 40278079. The next prime is 40278101. The reversal of 40278080 is 8087204.

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, 60791 + ... + 61449.

Almost surely, 2^40278080 is an apocalyptic number.

40278080 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 40278080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48280320).

40278080 is an abundant number, since it is smaller than the sum of its proper divisors (56282560).

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

40278080 is a wasteful number, since it uses less digits than its factorization.

40278080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 40278080 is about 6346.5013984084. The cubic root of 40278080 is about 342.7858767221.

The spelling of 40278080 in words is "forty million, two hundred seventy-eight thousand, eighty".