40272240 has 40 divisors (see below), whose sum is σ = 124844688. Its totient is φ = 10739200.

The previous prime is 40272137. The next prime is 40272251. The reversal of 40272240 is 4227204.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83661 + ... + 84140.

Almost surely, 2^40272240 is an apocalyptic number.

40272240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40272240 is an abundant number, since it is smaller than the sum of its proper divisors (84572448).

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

40272240 is a wasteful number, since it uses less digits than its factorization.

40272240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167817 (or 167811 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40272240 is about 6346.0412857151. The cubic root of 40272240 is about 342.7693088496.

Adding to 40272240 its reverse (4227204), we get a palindrome (44499444).

The spelling of 40272240 in words is "forty million, two hundred seventy-two thousand, two hundred forty".