3546640240 has 80 divisors (see below), whose sum is σ = 9687567456. Its totient is φ = 1190476800.

The previous prime is 3546640213. The next prime is 3546640259. The reversal of 3546640240 is 420466453.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 3546640196 and 3546640205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143571 + ... + 166450.

Almost surely, 2^3546640240 is an apocalyptic number.

It is an amenable number.

3546640240 is an abundant number, since it is smaller than the sum of its proper divisors (6140927216).

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

3546640240 is a wasteful number, since it uses less digits than its factorization.

3546640240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310058 (or 310052 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 3546640240 is about 59553.6752854095. The cubic root of 3546640240 is about 1525.0089029311.

The spelling of 3546640240 in words is "three billion, five hundred forty-six million, six hundred forty thousand, two hundred forty".