2546578740 has 96 divisors (see below), whose sum is σ = 7764624000. Its totient is φ = 621153792.

The previous prime is 2546578729. The next prime is 2546578753. The reversal of 2546578740 is 478756452.

It is a self number, because there is not a number n which added to its sum of digits gives 2546578740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5455 + ... + 71574.

It is an arithmetic number, because the mean of its divisors is an integer number (80881500).

Almost surely, 2^2546578740 is an apocalyptic number.

2546578740 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 2546578740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3882312000).

2546578740 is an abundant number, since it is smaller than the sum of its proper divisors (5218045260).

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

2546578740 is a wasteful number, since it uses less digits than its factorization.

2546578740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77089 (or 77087 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 48.

The square root of 2546578740 is about 50463.6377999050. The cubic root of 2546578740 is about 1365.5859390545.

The spelling of 2546578740 in words is "two billion, five hundred forty-six million, five hundred seventy-eight thousand, seven hundred forty".