40226720 has 24 divisors (see below), whose sum is σ = 95036004. Its totient is φ = 16090624.

The previous prime is 40226713. The next prime is 40226729. The reversal of 40226720 is 2762204.

40226720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40094224 + 132496 = 6332^2 + 364^2 .

It is not an unprimeable number, because it can be changed into a prime (40226729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125549 + ... + 125868.

Almost surely, 2^40226720 is an apocalyptic number.

40226720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40226720 is an abundant number, since it is smaller than the sum of its proper divisors (54809284).

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

40226720 is a wasteful number, since it uses less digits than its factorization.

40226720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251432 (or 251424 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40226720 is about 6342.4537838285. The cubic root of 40226720 is about 342.6401152967.

Adding to 40226720 its reverse (2762204), we get a palindrome (42988924).

The spelling of 40226720 in words is "forty million, two hundred twenty-six thousand, seven hundred twenty".