40016424 has 64 divisors (see below), whose sum is σ = 114848640. Its totient is φ = 11381760.

The previous prime is 40016393. The next prime is 40016429. The reversal of 40016424 is 42461004.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 40016424.

It is not an unprimeable number, because it can be changed into a prime (40016429) 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, 52204 + ... + 52964.

It is an arithmetic number, because the mean of its divisors is an integer number (1794510).

Almost surely, 2^40016424 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 40016424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57424320).

40016424 is an abundant number, since it is smaller than the sum of its proper divisors (74832216).

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

40016424 is a wasteful number, since it uses less digits than its factorization.

40016424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40016424 is about 6325.8536182874. The cubic root of 40016424 is about 342.0419906720.

Adding to 40016424 its reverse (42461004), we get a palindrome (82477428).

The spelling of 40016424 in words is "forty million, sixteen thousand, four hundred twenty-four".