40271715 has 64 divisors (see below), whose sum is σ = 79902720. Its totient is φ = 19077120.

The previous prime is 40271713. The next prime is 40271719. The reversal of 40271715 is 51717204.

It is a Cunningham number, because it is equal to 6346²-1.

It is not a de Polignac number, because 40271715 - 2¹ = 40271713 is a prime.

It is a super-2 number, since 2×40271715² = 3243622058082450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40271713) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69507 + ... + 70083.

It is an arithmetic number, because the mean of its divisors is an integer number (1248480).

Almost surely, 2^40271715 is an apocalyptic number.

40271715 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40271715 is a deficient number, since it is larger than the sum of its proper divisors (39631005).

40271715 is a wasteful number, since it uses less digits than its factorization.

40271715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 40271715 is about 6345.9999212102. Note that the first 4 decimals coincide. The cubic root of 40271715 is about 342.7678193648.

Adding to 40271715 its reverse (51717204), we get a palindrome (91988919).

The spelling of 40271715 in words is "forty million, two hundred seventy-one thousand, seven hundred fifteen".