40026720 has 48 divisors (see below), whose sum is σ = 126085680. Its totient is φ = 10673664.

The previous prime is 40026709. The next prime is 40026743. The reversal of 40026720 is 2762004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 41215 + ... + 42174.

It is an arithmetic number, because the mean of its divisors is an integer number (2626785).

Almost surely, 2^40026720 is an apocalyptic number.

40026720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40026720 is an abundant number, since it is smaller than the sum of its proper divisors (86058960).

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

40026720 is a wasteful number, since it uses less digits than its factorization.

40026720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83407 (or 83399 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40026720 is about 6326.6673691605. The cubic root of 40026720 is about 342.0713233142.

Adding to 40026720 its reverse (2762004), we get a palindrome (42788724).

The spelling of 40026720 in words is "forty million, twenty-six thousand, seven hundred twenty".