9161040 has 240 divisors, whose sum is σ = 35622720. Its totient is φ = 1935360.

The previous prime is 9160973. The next prime is 9161051. The reversal of 9161040 is 401619.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-3 number, since 3×9161040³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 9160998 and 9161016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 223420 + ... + 223460.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

Almost surely, 2^9161040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9161040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17811360).

9161040 is an abundant number, since it is smaller than the sum of its proper divisors (26461680).

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

9161040 is a wasteful number, since it uses less digits than its factorization.

9161040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 9161040 is about 3026.7209980439. The cubic root of 9161040 is about 209.2417096245.

Adding to 9161040 its reverse (401619), we get a palindrome (9562659).

The spelling of 9161040 in words is "nine million, one hundred sixty-one thousand, forty".