40591456 has 48 divisors (see below), whose sum is σ = 82627776. Its totient is φ = 19618816.

The previous prime is 40591451. The next prime is 40591457. The reversal of 40591456 is 65419504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40591451) 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, 205950 + ... + 206146.

It is an arithmetic number, because the mean of its divisors is an integer number (1721412).

Almost surely, 2^40591456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40591456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41313888).

40591456 is an abundant number, since it is smaller than the sum of its proper divisors (42036320).

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

40591456 is a wasteful number, since it uses less digits than its factorization.

40591456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 40591456 is about 6371.1424407244. The cubic root of 40591456 is about 343.6725746945.

The spelling of 40591456 in words is "forty million, five hundred ninety-one thousand, four hundred fifty-six".