2549127780 has 192 divisors, whose sum is σ = 8486956800. Its totient is φ = 633277440.

The previous prime is 2549127769. The next prime is 2549127793. The reversal of 2549127780 is 877219452.

It is a happy number.

2549127780 is a `hidden beast` number, since 2 + 549 + 1 + 27 + 7 + 80 = 666.

2549127780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 623824 + ... + 627896.

It is an arithmetic number, because the mean of its divisors is an integer number (44202900).

Almost surely, 2^2549127780 is an apocalyptic number.

2549127780 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 2549127780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4243478400).

2549127780 is an abundant number, since it is smaller than the sum of its proper divisors (5937829020).

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

2549127780 is a wasteful number, since it uses less digits than its factorization.

2549127780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171 (or 4163 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 2549127780 is about 50488.8876882825. The cubic root of 2549127780 is about 1366.0414223716.

The spelling of 2549127780 in words is "two billion, five hundred forty-nine million, one hundred twenty-seven thousand, seven hundred eighty".