23478720 has 112 divisors (see below), whose sum is σ = 76675488. Its totient is φ = 6082560.

The previous prime is 23478713. The next prime is 23478727. The reversal of 23478720 is 2787432.

It is an interprime number because it is at equal distance from previous prime (23478713) and next prime (23478727).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35190 + ... + 35850.

Almost surely, 2^23478720 is an apocalyptic number.

23478720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23478720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38337744).

23478720 is an abundant number, since it is smaller than the sum of its proper divisors (53196768).

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

23478720 is a wasteful number, since it uses less digits than its factorization.

23478720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 23478720 is about 4845.4844958992. The cubic root of 23478720 is about 286.3462317006.

The spelling of 23478720 in words is "twenty-three million, four hundred seventy-eight thousand, seven hundred twenty".