3290078640 has 40 divisors (see below), whose sum is σ = 10199244528. Its totient is φ = 877354240.

The previous prime is 3290078621. The next prime is 3290078647. The reversal of 3290078640 is 468700923.

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

It is not an unprimeable number, because it can be changed into a prime (3290078647) 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, 6854091 + ... + 6854570.

Almost surely, 2^3290078640 is an apocalyptic number.

3290078640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3290078640 is an abundant number, since it is smaller than the sum of its proper divisors (6909165888).

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

3290078640 is a wasteful number, since it uses less digits than its factorization.

3290078640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708677 (or 13708671 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 3290078640 is about 57359.2071074906. The cubic root of 3290078640 is about 1487.3120374507.

The spelling of 3290078640 in words is "three billion, two hundred ninety million, seventy-eight thousand, six hundred forty".