23789940 has 48 divisors (see below), whose sum is σ = 66853248. Its totient is φ = 6321024.

The previous prime is 23789933. The next prime is 23789959. The reversal of 23789940 is 4998732.

It is a super-2 number, since 2×23789940² = 1131922490407200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23789892 and 23789901.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21849 + ... + 22911.

It is an arithmetic number, because the mean of its divisors is an integer number (1392776).

Almost surely, 2^23789940 is an apocalyptic number.

23789940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23789940 is an abundant number, since it is smaller than the sum of its proper divisors (43063308).

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

23789940 is a wasteful number, since it uses less digits than its factorization.

23789940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 23789940 is about 4877.4932086062. The cubic root of 23789940 is about 287.6058941988.

The spelling of 23789940 in words is "twenty-three million, seven hundred eighty-nine thousand, nine hundred forty".