3540635440 has 40 divisors (see below), whose sum is σ = 8260127568. Its totient is φ = 1411411200.

The previous prime is 3540635431. The next prime is 3540635459. The reversal of 3540635440 is 445360453.

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

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3540635396 and 3540635405.

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, 52086 + ... + 98965.

Almost surely, 2^3540635440 is an apocalyptic number.

It is an amenable number.

3540635440 is an abundant number, since it is smaller than the sum of its proper divisors (4719492128).

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

3540635440 is a wasteful number, since it uses less digits than its factorization.

3540635440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151357 (or 151351 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

The square root of 3540635440 is about 59503.2389034412. The cubic root of 3540635440 is about 1524.1477549329.

Adding to 3540635440 its reverse (445360453), we get a palindrome (3985995893).

The spelling of 3540635440 in words is "three billion, five hundred forty million, six hundred thirty-five thousand, four hundred forty".