40797216 has 96 divisors (see below), whose sum is σ = 124225920. Its totient is φ = 13001472.

The previous prime is 40797191. The next prime is 40797217. The reversal of 40797216 is 61279704.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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 (40797217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18846 + ... + 20898.

It is an arithmetic number, because the mean of its divisors is an integer number (1294020).

Almost surely, 2^40797216 is an apocalyptic number.

40797216 is a gapful number since it is divisible by the number (46) 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 40797216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62112960).

40797216 is an abundant number, since it is smaller than the sum of its proper divisors (83428704).

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

40797216 is a wasteful number, since it uses less digits than its factorization.

40797216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 40797216 is about 6387.2698392975. The cubic root of 40797216 is about 344.2522937369.

The spelling of 40797216 in words is "forty million, seven hundred ninety-seven thousand, two hundred sixteen".