2549283840 has 308 divisors, whose sum is σ = 9182170584. Its totient is φ = 678813696.

The previous prime is 2549283839. The next prime is 2549283883. The reversal of 2549283840 is 483829452.

2549283840 is a `hidden beast` number, since 2 + 5 + 492 + 83 + 84 + 0 = 666.

2549283840 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 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, 3732139 + ... + 3732821.

Almost surely, 2^2549283840 is an apocalyptic number.

2549283840 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 2549283840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4591085292).

2549283840 is an abundant number, since it is smaller than the sum of its proper divisors (6632886744).

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

2549283840 is an frugal number, since it uses more digits than its factorization.

2549283840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 2549283840 is about 50490.4331532222. The cubic root of 2549283840 is about 1366.0692985829.

The spelling of 2549283840 in words is "two billion, five hundred forty-nine million, two hundred eighty-three thousand, eight hundred forty".