2620763628 has 72 divisors (see below), whose sum is σ = 7124544000. Its totient is φ = 747627552.

The previous prime is 2620763603. The next prime is 2620763633. The reversal of 2620763628 is 8263670262.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2620763628.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419673 + ... + 425871.

It is an arithmetic number, because the mean of its divisors is an integer number (98952000).

Almost surely, 2^2620763628 is an apocalyptic number.

2620763628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2620763628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3562272000).

2620763628 is an abundant number, since it is smaller than the sum of its proper divisors (4503780372).

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

2620763628 is a wasteful number, since it uses less digits than its factorization.

2620763628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939 (or 6930 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 2620763628 is about 51193.3943785719. The cubic root of 2620763628 is about 1378.7196042372.

The spelling of 2620763628 in words is "two billion, six hundred twenty million, seven hundred sixty-three thousand, six hundred twenty-eight".