40522320 has 120 divisors (see below), whose sum is σ = 142062336. Its totient is φ = 10331904.

The previous prime is 40522303. The next prime is 40522333. The reversal of 40522320 is 2322504.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40522293 and 40522302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15337 + ... + 17783.

Almost surely, 2^40522320 is an apocalyptic number.

40522320 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 40522320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71031168).

40522320 is an abundant number, since it is smaller than the sum of its proper divisors (101540016).

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

40522320 is a wasteful number, since it uses less digits than its factorization.

40522320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40522320 is about 6365.7144139523. The cubic root of 40522320 is about 343.4773476541.

Adding to 40522320 its reverse (2322504), we get a palindrome (42844824).

The spelling of 40522320 in words is "forty million, five hundred twenty-two thousand, three hundred twenty".