40522720 has 96 divisors (see below), whose sum is σ = 110835648. Its totient is φ = 13713408.

The previous prime is 40522697. The next prime is 40522723. The reversal of 40522720 is 2722504.

It is a junction number, because it is equal to n+sod(n) for n = 40522691 and 40522700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40522723) 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, 108454 + ... + 108826.

It is an arithmetic number, because the mean of its divisors is an integer number (1154538).

Almost surely, 2^40522720 is an apocalyptic number.

40522720 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 40522720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55417824).

40522720 is an abundant number, since it is smaller than the sum of its proper divisors (70312928).

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

40522720 is a wasteful number, since it uses less digits than its factorization.

40522720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 40522720 is about 6365.7458321865. The cubic root of 40522720 is about 343.4784778172.

The spelling of 40522720 in words is "forty million, five hundred twenty-two thousand, seven hundred twenty".