40997304 has 48 divisors (see below), whose sum is σ = 112039200. Its totient is φ = 13542144.

The previous prime is 40997291. The next prime is 40997309. The reversal of 40997304 is 40379904.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40997309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5617 + ... + 10655.

It is an arithmetic number, because the mean of its divisors is an integer number (2334150).

Almost surely, 2^40997304 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 40997304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56019600).

40997304 is an abundant number, since it is smaller than the sum of its proper divisors (71041896).

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

40997304 is a wasteful number, since it uses less digits than its factorization.

40997304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164 (or 5157 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40997304 is about 6402.9137117409. The cubic root of 40997304 is about 344.8141658290.

The spelling of 40997304 in words is "forty million, nine hundred ninety-seven thousand, three hundred four".