23744420 has 36 divisors (see below), whose sum is σ = 58006620. Its totient is φ = 8140608.

The previous prime is 23744407. The next prime is 23744443. The reversal of 23744420 is 2444732.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 18472804 = 2296^2 + 4298^2 .

It is a super-2 number, since 2×23744420² = 1127594962272800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23744420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11135 + ... + 13094.

It is an arithmetic number, because the mean of its divisors is an integer number (1611295).

Almost surely, 2^23744420 is an apocalyptic number.

23744420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23744420 is an abundant number, since it is smaller than the sum of its proper divisors (34262200).

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

23744420 is a wasteful number, since it uses less digits than its factorization.

23744420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24252 (or 24243 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 23744420 is about 4872.8246428535. The cubic root of 23744420 is about 287.4223407133.

The spelling of 23744420 in words is "twenty-three million, seven hundred forty-four thousand, four hundred twenty".