2520784838 has 16 divisors (see below), whose sum is σ = 4442222736. Its totient is φ = 1057671840.

The previous prime is 2520784823. The next prime is 2520784879. The reversal of 2520784838 is 8384870252.

2520784838 = 6937² + 6938² + ... + 6988².

It is a junction number, because it is equal to n+sod(n) for n = 2520784792 and 2520784801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4406681 + ... + 4407252.

It is an arithmetic number, because the mean of its divisors is an integer number (277638921).

Almost surely, 2^2520784838 is an apocalyptic number.

2520784838 is a deficient number, since it is larger than the sum of its proper divisors (1921437898).

2520784838 is a wasteful number, since it uses less digits than its factorization.

2520784838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813959.

The product of its (nonzero) digits is 860160, while the sum is 47.

The square root of 2520784838 is about 50207.4181570811. The cubic root of 2520784838 is about 1360.9596812796.

The spelling of 2520784838 in words is "two billion, five hundred twenty million, seven hundred eighty-four thousand, eight hundred thirty-eight".