2620704780 has 240 divisors, whose sum is σ = 8476532064. Its totient is φ = 677514240.

The previous prime is 2620704743. The next prime is 2620704797. The reversal of 2620704780 is 874070262.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11247544 + ... + 11247776.

Almost surely, 2^2620704780 is an apocalyptic number.

2620704780 is a gapful number since it is divisible by the number (20) 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 2620704780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4238266032).

2620704780 is an abundant number, since it is smaller than the sum of its proper divisors (5855827284).

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

2620704780 is a wasteful number, since it uses less digits than its factorization.

2620704780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2620704780 is about 51192.8196136919. The cubic root of 2620704780 is about 1378.7092846624.

The spelling of 2620704780 in words is "two billion, six hundred twenty million, seven hundred four thousand, seven hundred eighty".