2439776628 has 18 divisors (see below), whose sum is σ = 6167213234. Its totient is φ = 813258864.

The previous prime is 2439776609. The next prime is 2439776629. The reversal of 2439776628 is 8266779342.

2439776628 is a `hidden beast` number, since 2 + 4 + 3 + 9 + 7 + 7 + 6 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2069522064 + 370254564 = 45492^2 + 19242^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439776629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33885751 + ... + 33885822.

Almost surely, 2^2439776628 is an apocalyptic number.

It is an amenable number.

2439776628 is an abundant number, since it is smaller than the sum of its proper divisors (3727436606).

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

2439776628 is a wasteful number, since it uses less digits than its factorization.

2439776628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67771583 (or 67771578 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 2439776628 is about 49394.0950721845. The cubic root of 2439776628 is about 1346.2220165763. Note that the first 3 decimals are identical.

It can be divided in two parts, 24397 and 76628, that added together give a triangular number (101025 = T₄₄₉).

The spelling of 2439776628 in words is "two billion, four hundred thirty-nine million, seven hundred seventy-six thousand, six hundred twenty-eight".