40014240 has 96 divisors (see below), whose sum is σ = 144063360. Its totient is φ = 9145344.

The previous prime is 40014239. The next prime is 40014253. The reversal of 40014240 is 4241004.

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

It is a super-2 number, since 2×40014240² = 3202278805555200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2595 + ... + 9314.

It is an arithmetic number, because the mean of its divisors is an integer number (1500660).

Almost surely, 2^40014240 is an apocalyptic number.

40014240 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 40014240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72031680).

40014240 is an abundant number, since it is smaller than the sum of its proper divisors (104049120).

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

40014240 is a wasteful number, since it uses less digits than its factorization.

40014240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11934 (or 11926 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40014240 is about 6325.6809910080. The cubic root of 40014240 is about 342.0357679495.

Adding to 40014240 its reverse (4241004), we get a palindrome (44255244).

The spelling of 40014240 in words is "forty million, fourteen thousand, two hundred forty".