40827021 has 16 divisors (see below), whose sum is σ = 57277248. Its totient is φ = 25833600.

The previous prime is 40827011. The next prime is 40827077. The reversal of 40827021 is 12072804.

It is not a de Polignac number, because 40827021 - 2¹³ = 40818829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40826982 and 40827000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40827011) 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, 66 + ... + 9036.

It is an arithmetic number, because the mean of its divisors is an integer number (3579828).

Almost surely, 2^40827021 is an apocalyptic number.

40827021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40827021 is a deficient number, since it is larger than the sum of its proper divisors (16450227).

40827021 is a wasteful number, since it uses less digits than its factorization.

40827021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9052.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 40827021 is about 6389.6025698004. The cubic root of 40827021 is about 344.3361061715.

Adding to 40827021 its reverse (12072804), we get a palindrome (52899825).

The spelling of 40827021 in words is "forty million, eight hundred twenty-seven thousand, twenty-one".