40097288 has 96 divisors (see below), whose sum is σ = 101204640. Its totient is φ = 14676480.

The previous prime is 40097263. The next prime is 40097293. The reversal of 40097288 is 88279004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73031 + ... + 73577.

It is an arithmetic number, because the mean of its divisors is an integer number (1054215).

Almost surely, 2^40097288 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 40097288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50602320).

40097288 is an abundant number, since it is smaller than the sum of its proper divisors (61107352).

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

40097288 is a wasteful number, since it uses less digits than its factorization.

40097288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 40097288 is about 6332.2419410506. The cubic root of 40097288 is about 342.2722317489.

The spelling of 40097288 in words is "forty million, ninety-seven thousand, two hundred eighty-eight".