23706649340 has 96 divisors (see below), whose sum is σ = 54740871360. Its totient is φ = 8552448000.

The previous prime is 23706649339. The next prime is 23706649349. The reversal of 23706649340 is 4394660732.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 23706649291 and 23706649300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23706649349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25517996 + ... + 25518924.

It is an arithmetic number, because the mean of its divisors is an integer number (570217410).

Almost surely, 2^23706649340 is an apocalyptic number.

23706649340 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 23706649340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27370435680).

23706649340 is an abundant number, since it is smaller than the sum of its proper divisors (31034222020).

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

23706649340 is a wasteful number, since it uses less digits than its factorization.

23706649340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743 (or 1741 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 44.

The spelling of 23706649340 in words is "twenty-three billion, seven hundred six million, six hundred forty-nine thousand, three hundred forty".