3020402640 has 80 divisors (see below), whose sum is σ = 9856065600. Its totient is φ = 763047936.

The previous prime is 3020402629. The next prime is 3020402647. The reversal of 3020402640 is 462040203.

3020402640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020402647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326625 + ... + 335744.

It is an arithmetic number, because the mean of its divisors is an integer number (123200820).

Almost surely, 2^3020402640 is an apocalyptic number.

3020402640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3020402640 is an abundant number, since it is smaller than the sum of its proper divisors (6835662960).

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

3020402640 is a wasteful number, since it uses less digits than its factorization.

3020402640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662404 (or 662398 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 3020402640 is about 54958.1899265251. The cubic root of 3020402640 is about 1445.5117083952.

Adding to 3020402640 its reverse (462040203), we get a palindrome (3482442843).

The spelling of 3020402640 in words is "three billion, twenty million, four hundred two thousand, six hundred forty".