23747420 has 24 divisors (see below), whose sum is σ = 49961184. Its totient is φ = 9481536.

The previous prime is 23747407. The next prime is 23747429. The reversal of 23747420 is 2474732.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23747429) 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, 20702 + ... + 21818.

It is an arithmetic number, because the mean of its divisors is an integer number (2081716).

Almost surely, 2^23747420 is an apocalyptic number.

23747420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23747420 is an abundant number, since it is smaller than the sum of its proper divisors (26213764).

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

23747420 is a wasteful number, since it uses less digits than its factorization.

23747420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 23747420 is about 4873.1324628005. The cubic root of 23747420 is about 287.4344450409.

It can be divided in two parts, 2374 and 7420, that multiplied together give a triangular number (17615080 = T₅₉₃₅).

The spelling of 23747420 in words is "twenty-three million, seven hundred forty-seven thousand, four hundred twenty".