40021160 has 32 divisors (see below), whose sum is σ = 93155400. Its totient is φ = 15456000.

The previous prime is 40021159. The next prime is 40021169. The reversal of 40021160 is 6112004.

It can be written as a sum of positive squares in 4 ways, for example, as 33477796 + 6543364 = 5786^2 + 2558^2 .

It is not an unprimeable number, because it can be changed into a prime (40021169) 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, 16091 + ... + 18410.

Almost surely, 2^40021160 is an apocalyptic number.

40021160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40021160 is an abundant number, since it is smaller than the sum of its proper divisors (53134240).

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

40021160 is a wasteful number, since it uses less digits than its factorization.

40021160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34541 (or 34537 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 40021160 is about 6326.2279440437. The cubic root of 40021160 is about 342.0554838564.

Adding to 40021160 its reverse (6112004), we get a palindrome (46133164).

The spelling of 40021160 in words is "forty million, twenty-one thousand, one hundred sixty".