2784401438 has 64 divisors (see below), whose sum is σ = 5208440832. Its totient is φ = 1087067520.

The previous prime is 2784401407. The next prime is 2784401443. The reversal of 2784401438 is 8341044872.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2784401395 and 2784401404.

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, 6013595 + ... + 6014057.

It is an arithmetic number, because the mean of its divisors is an integer number (81381888).

Almost surely, 2^2784401438 is an apocalyptic number.

2784401438 is a deficient number, since it is larger than the sum of its proper divisors (2424039394).

2784401438 is a wasteful number, since it uses less digits than its factorization.

2784401438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 2784401438 is about 52767.4278129984. The cubic root of 2784401438 is about 1406.8375441983.

The spelling of 2784401438 in words is "two billion, seven hundred eighty-four million, four hundred one thousand, four hundred thirty-eight".