40720269 has 16 divisors (see below), whose sum is σ = 55756800. Its totient is φ = 26420016.

The previous prime is 40720247. The next prime is 40720279. The reversal of 40720269 is 96202704.

It is a happy number.

It is not a de Polignac number, because 40720269 - 2⁵ = 40720237 is a prime.

It is a super-2 number, since 2×40720269² = 3316280614864722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40720279) 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, 61462 + ... + 62120.

It is an arithmetic number, because the mean of its divisors is an integer number (3484800).

Almost surely, 2^40720269 is an apocalyptic number.

It is an amenable number.

40720269 is a deficient number, since it is larger than the sum of its proper divisors (15036531).

40720269 is a wasteful number, since it uses less digits than its factorization.

40720269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40720269 is about 6381.2435308488. The cubic root of 40720269 is about 344.0357278783.

The spelling of 40720269 in words is "forty million, seven hundred twenty thousand, two hundred sixty-nine".