23308977240 has 192 divisors, whose sum is σ = 78175056960. Its totient is φ = 6019338240.

The previous prime is 23308977229. The next prime is 23308977259. The reversal of 23308977240 is 4277980332.

23308977240 is a `hidden beast` number, since 2 + 330 + 8 + 9 + 77 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2016357 + ... + 2027883.

It is an arithmetic number, because the mean of its divisors is an integer number (407161755).

Almost surely, 2^23308977240 is an apocalyptic number.

23308977240 is a gapful number since it is divisible by the number (20) 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 23308977240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39087528480).

23308977240 is an abundant number, since it is smaller than the sum of its proper divisors (54866079720).

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

23308977240 is a wasteful number, since it uses less digits than its factorization.

23308977240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11722 (or 11715 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 23308977240 in words is "twenty-three billion, three hundred eight million, nine hundred seventy-seven thousand, two hundred forty".