9013840 has 40 divisors (see below), whose sum is σ = 22864608. Its totient is φ = 3277440.

The previous prime is 9013817. The next prime is 9013853. The reversal of 9013840 is 483109.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4242 + ... + 6001.

Almost surely, 2^9013840 is an apocalyptic number.

It is an amenable number.

9013840 is an abundant number, since it is smaller than the sum of its proper divisors (13850768).

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

9013840 is a wasteful number, since it uses less digits than its factorization.

9013840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267 (or 10261 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 9013840 is about 3002.3057805627. The cubic root of 9013840 is about 208.1149512534.

Adding to 9013840 its reverse (483109), we get a palindrome (9496949).

The spelling of 9013840 in words is "nine million, thirteen thousand, eight hundred forty".