23969940 has 24 divisors (see below), whose sum is σ = 67116000. Its totient is φ = 6391968.

The previous prime is 23969909. The next prime is 23969941. The reversal of 23969940 is 4996932.

It is a junction number, because it is equal to n+sod(n) for n = 23969892 and 23969901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23969941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199690 + ... + 199809.

It is an arithmetic number, because the mean of its divisors is an integer number (2796500).

Almost surely, 2^23969940 is an apocalyptic number.

23969940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23969940 is an abundant number, since it is smaller than the sum of its proper divisors (43146060).

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

23969940 is a wasteful number, since it uses less digits than its factorization.

23969940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399511 (or 399509 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 23969940 is about 4895.9105383983. The cubic root of 23969940 is about 288.3294359087.

The spelling of 23969940 in words is "twenty-three million, nine hundred sixty-nine thousand, nine hundred forty".