9971040 has 48 divisors (see below), whose sum is σ = 31410288. Its totient is φ = 2658816.

The previous prime is 9971033. The next prime is 9971047. The reversal of 9971040 is 401799.

It is an interprime number because it is at equal distance from previous prime (9971033) and next prime (9971047).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 9970989 and 9971007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971047) 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, 9907 + ... + 10866.

It is an arithmetic number, because the mean of its divisors is an integer number (654381).

Almost surely, 2^9971040 is an apocalyptic number.

It is an amenable number.

9971040 is an abundant number, since it is smaller than the sum of its proper divisors (21439248).

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

9971040 is a wasteful number, since it uses less digits than its factorization.

9971040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20791 (or 20783 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 9971040 is about 3157.6953621273. The cubic root of 9971040 is about 215.2352931525.

The spelling of 9971040 in words is "nine million, nine hundred seventy-one thousand, forty".