23835941840 has 20 divisors (see below), whose sum is σ = 55418564964. Its totient is φ = 9534376704.

The previous prime is 23835941827. The next prime is 23835941851. The reversal of 23835941840 is 4814953832.

It can be written as a sum of positive squares in 2 ways, for example, as 8501577616 + 15334364224 = 92204^2 + 123832^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148974557 + ... + 148974716.

Almost surely, 2^23835941840 is an apocalyptic number.

23835941840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23835941840 is an abundant number, since it is smaller than the sum of its proper divisors (31582623124).

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

23835941840 is a wasteful number, since it uses less digits than its factorization.

23835941840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297949286 (or 297949280 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 23835941840 in words is "twenty-three billion, eight hundred thirty-five million, nine hundred forty-one thousand, eight hundred forty".