2620278528 has 252 divisors, whose sum is σ = 8416599240. Its totient is φ = 722835456.

The previous prime is 2620278481. The next prime is 2620278533. The reversal of 2620278528 is 8258720262.

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 2620278528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 90354418 + ... + 90354446.

Almost surely, 2^2620278528 is an apocalyptic number.

2620278528 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 2620278528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4208299620).

2620278528 is an abundant number, since it is smaller than the sum of its proper divisors (5796320712).

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

2620278528 is an frugal number, since it uses more digits than its factorization.

2620278528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 2620278528 is about 51188.6562433514. The cubic root of 2620278528 is about 1378.6345325755.

The spelling of 2620278528 in words is "two billion, six hundred twenty million, two hundred seventy-eight thousand, five hundred twenty-eight".