40971040 has 48 divisors (see below), whose sum is σ = 105598080. Its totient is φ = 14897920.

The previous prime is 40971023. The next prime is 40971043. The reversal of 40971040 is 4017904.

It is a super-2 number, since 2×40971040² = 3357252237363200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40970996 and 40971014.

It is not an unprimeable number, because it can be changed into a prime (40971043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9880 + ... + 13399.

It is an arithmetic number, because the mean of its divisors is an integer number (2199960).

Almost surely, 2^40971040 is an apocalyptic number.

40971040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40971040 is an abundant number, since it is smaller than the sum of its proper divisors (64627040).

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

40971040 is a wasteful number, since it uses less digits than its factorization.

40971040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23305 (or 23297 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 40971040 is about 6400.8624418902. The cubic root of 40971040 is about 344.7405176217.

Adding to 40971040 its reverse (4017904), we get a palindrome (44988944).

The spelling of 40971040 in words is "forty million, nine hundred seventy-one thousand, forty".