4000236840 has 192 divisors, whose sum is σ = 13527259200. Its totient is φ = 1063176192.

The previous prime is 4000236749. The next prime is 4000236841. The reversal of 4000236840 is 486320004.

4000236840 = 75² + 76² + ... + 2289².

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4000236841) 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 47 ways as a sum of consecutive naturals, for example, 4305496 + ... + 4306424.

It is an arithmetic number, because the mean of its divisors is an integer number (70454475).

Almost surely, 2^4000236840 is an apocalyptic number.

4000236840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000236840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6763629600).

4000236840 is an abundant number, since it is smaller than the sum of its proper divisors (9527022360).

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

4000236840 is a wasteful number, since it uses less digits than its factorization.

4000236840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 4000236840 is about 63247.4255602550. The cubic root of 4000236840 is about 1587.4323813553.

Adding to 4000236840 its reverse (486320004), we get a palindrome (4486556844).

The spelling of 4000236840 in words is "four billion, two hundred thirty-six thousand, eight hundred forty".