40940720 has 40 divisors (see below), whose sum is σ = 95458176. Its totient is φ = 16329728.

The previous prime is 40940689. The next prime is 40940729. The reversal of 40940720 is 2704904.

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

It is a super-2 number, since 2×40940720² = 3352285108236800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40940720.

It is not an unprimeable number, because it can be changed into a prime (40940729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47009 + ... + 47871.

Almost surely, 2^40940720 is an apocalyptic number.

40940720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40940720 is an abundant number, since it is smaller than the sum of its proper divisors (54517456).

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

40940720 is a wasteful number, since it uses less digits than its factorization.

40940720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 40940720 is about 6398.4935727091. The cubic root of 40940720 is about 344.6554566293.

The spelling of 40940720 in words is "forty million, nine hundred forty thousand, seven hundred twenty".