23789449640 has 32 divisors (see below), whose sum is σ = 58392286560. Its totient is φ = 8650708800.

The previous prime is 23789449591. The next prime is 23789449657. The reversal of 23789449640 is 4694498732.

It is a super-2 number, since 2×23789449640² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27033026 + ... + 27033905.

It is an arithmetic number, because the mean of its divisors is an integer number (1824758955).

Almost surely, 2^23789449640 is an apocalyptic number.

23789449640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23789449640 is an abundant number, since it is smaller than the sum of its proper divisors (34602836920).

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

23789449640 is a wasteful number, since it uses less digits than its factorization.

23789449640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54066953 (or 54066949 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 23789449640 in words is "twenty-three billion, seven hundred eighty-nine million, four hundred forty-nine thousand, six hundred forty".