2620022640 has 40 divisors (see below), whose sum is σ = 8122070928. Its totient is φ = 698672640.

The previous prime is 2620022627. The next prime is 2620022641. The reversal of 2620022640 is 462200262.

2620022640 is digitally balanced in base 2 and base 4, because in such bases 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 (40).

It is a super-2 number, since 2×2620022640² = 13729037268225139200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2620022640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620022641) 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, 5458141 + ... + 5458620.

Almost surely, 2^2620022640 is an apocalyptic number.

2620022640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2620022640 is an abundant number, since it is smaller than the sum of its proper divisors (5502048288).

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

2620022640 is a wasteful number, since it uses less digits than its factorization.

2620022640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916777 (or 10916771 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2620022640 is about 51186.1567223014. The cubic root of 2620022640 is about 1378.5896534385.

The spelling of 2620022640 in words is "two billion, six hundred twenty million, twenty-two thousand, six hundred forty".