23784220 has 24 divisors (see below), whose sum is σ = 50048208. Its totient is φ = 9494400.

The previous prime is 23784217. The next prime is 23784221. The reversal of 23784220 is 2248732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23784221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12960 + ... + 14680.

It is an arithmetic number, because the mean of its divisors is an integer number (2085342).

Almost surely, 2^23784220 is an apocalyptic number.

23784220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23784220 is an abundant number, since it is smaller than the sum of its proper divisors (26263988).

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

23784220 is a wasteful number, since it uses less digits than its factorization.

23784220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 23784220 is about 4876.9068065732. The cubic root of 23784220 is about 287.5828419117.

The spelling of 23784220 in words is "twenty-three million, seven hundred eighty-four thousand, two hundred twenty".