40324020 has 96 divisors (see below), whose sum is σ = 124540416. Its totient is φ = 9667200.

The previous prime is 40324013. The next prime is 40324021. The reversal of 40324020 is 2042304.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40324021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70335 + ... + 70905.

It is an arithmetic number, because the mean of its divisors is an integer number (1297296).

Almost surely, 2^40324020 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 40324020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62270208).

40324020 is an abundant number, since it is smaller than the sum of its proper divisors (84216396).

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

40324020 is a wasteful number, since it uses less digits than its factorization.

40324020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40324020 is about 6350.1196839115. The cubic root of 40324020 is about 342.9161510540.

Adding to 40324020 its reverse (2042304), we get a palindrome (42366324).

The spelling of 40324020 in words is "forty million, three hundred twenty-four thousand, twenty".