40720755 has 16 divisors (see below), whose sum is σ = 65276064. Its totient is φ = 21676800.

The previous prime is 40720751. The next prime is 40720759. The reversal of 40720755 is 55702704.

It is an interprime number because it is at equal distance from previous prime (40720751) and next prime (40720759).

It is not a de Polignac number, because 40720755 - 2² = 40720751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40720751) 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, 6757 + ... + 11273.

It is an arithmetic number, because the mean of its divisors is an integer number (4079754).

Almost surely, 2^40720755 is an apocalyptic number.

40720755 is a deficient number, since it is larger than the sum of its proper divisors (24555309).

40720755 is a wasteful number, since it uses less digits than its factorization.

40720755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 40720755 is about 6381.2816110872. The cubic root of 40720755 is about 344.0370965718.

The spelling of 40720755 in words is "forty million, seven hundred twenty thousand, seven hundred fifty-five".