2239726788 has 240 divisors, whose sum is σ = 6556999680. Its totient is φ = 662328576.

The previous prime is 2239726777. The next prime is 2239726817. The reversal of 2239726788 is 8876279322.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (4064256) is a multiple of the sum of its prime factors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17635581 + ... + 17635707.

It is an arithmetic number, because the mean of its divisors is an integer number (27320832).

Almost surely, 2^2239726788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2239726788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3278499840).

2239726788 is an abundant number, since it is smaller than the sum of its proper divisors (4317272892).

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

2239726788 is a wasteful number, since it uses less digits than its factorization.

2239726788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 277 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 2239726788 is about 47325.7518482274. The cubic root of 2239726788 is about 1308.3733258072.

The spelling of 2239726788 in words is "two billion, two hundred thirty-nine million, seven hundred twenty-six thousand, seven hundred eighty-eight".