40820715 has 24 divisors (see below), whose sum is σ = 76199760. Its totient is φ = 20096064.

The previous prime is 40820687. The next prime is 40820737. The reversal of 40820715 is 51702804.

It is not a de Polignac number, because 40820715 - 2¹² = 40816619 is a prime.

It is a super-2 number, since 2×40820715² = 3332661546222450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34305 + ... + 35474.

It is an arithmetic number, because the mean of its divisors is an integer number (3174990).

Almost surely, 2^40820715 is an apocalyptic number.

40820715 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40820715 is a deficient number, since it is larger than the sum of its proper divisors (35379045).

40820715 is a wasteful number, since it uses less digits than its factorization.

40820715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69803 (or 69800 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 40820715 is about 6389.1090928235. The cubic root of 40820715 is about 344.3183769386.

The spelling of 40820715 in words is "forty million, eight hundred twenty thousand, seven hundred fifteen".