2781424830 has 64 divisors (see below), whose sum is σ = 6932132928. Its totient is φ = 713687040.

The previous prime is 2781424823. The next prime is 2781424837. The reversal of 2781424830 is 384241872.

It is an interprime number because it is at equal distance from previous prime (2781424823) and next prime (2781424837).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781424837) by changing a digit.

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, 74302 + ... + 105278.

It is an arithmetic number, because the mean of its divisors is an integer number (108314577).

Almost surely, 2^2781424830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2781424830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3466066464).

2781424830 is an abundant number, since it is smaller than the sum of its proper divisors (4150708098).

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

2781424830 is a wasteful number, since it uses less digits than its factorization.

2781424830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31101.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 2781424830 is about 52739.2152956413. The cubic root of 2781424830 is about 1406.3360483840.

The spelling of 2781424830 in words is "two billion, seven hundred eighty-one million, four hundred twenty-four thousand, eight hundred thirty".