40256080 has 40 divisors (see below), whose sum is σ = 94304232. Its totient is φ = 15980544.

The previous prime is 40256063. The next prime is 40256081. The reversal of 40256080 is 8065204.

It can be written as a sum of positive squares in 4 ways, for example, as 414736 + 39841344 = 644^2 + 6312^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40256081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9124 + ... + 12796.

Almost surely, 2^40256080 is an apocalyptic number.

40256080 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 40256080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47152116).

40256080 is an abundant number, since it is smaller than the sum of its proper divisors (54048152).

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

40256080 is a wasteful number, since it uses less digits than its factorization.

40256080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40256080 is about 6344.7679232577. The cubic root of 40256080 is about 342.7234551541.

The spelling of 40256080 in words is "forty million, two hundred fifty-six thousand, eighty".