23490780340 has 48 divisors (see below), whose sum is σ = 51958408320. Its totient is φ = 8896383360.

The previous prime is 23490780329. The next prime is 23490780343. The reversal of 23490780340 is 4308709432.

It is a junction number, because it is equal to n+sod(n) for n = 23490780293 and 23490780302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23490780343) 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 15 ways as a sum of consecutive naturals, for example, 640705 + ... + 676375.

It is an arithmetic number, because the mean of its divisors is an integer number (1082466840).

Almost surely, 2^23490780340 is an apocalyptic number.

23490780340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23490780340 is an abundant number, since it is smaller than the sum of its proper divisors (28467627980).

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

23490780340 is a wasteful number, since it uses less digits than its factorization.

23490780340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37432 (or 37430 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 23490780340 in words is "twenty-three billion, four hundred ninety million, seven hundred eighty thousand, three hundred forty".