2604642020 has 24 divisors (see below), whose sum is σ = 5487236664. Its totient is φ = 1038525696.

The previous prime is 2604642013. The next prime is 2604642071. The reversal of 2604642020 is 202464062.

It can be written as a sum of positive squares in 4 ways, for example, as 376996 + 2604265024 = 614^2 + 51032^2 .

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, 201779 + ... + 214298.

It is an arithmetic number, because the mean of its divisors is an integer number (228634861).

Almost surely, 2^2604642020 is an apocalyptic number.

2604642020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2604642020 is an abundant number, since it is smaller than the sum of its proper divisors (2882594644).

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

2604642020 is a wasteful number, since it uses less digits than its factorization.

2604642020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416399 (or 416397 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2604642020 is about 51035.6935879194. The cubic root of 2604642020 is about 1375.8867263265.

The spelling of 2604642020 in words is "two billion, six hundred four million, six hundred forty-two thousand, twenty".