23478336 has 140 divisors (see below), whose sum is σ = 79662528. Its totient is φ = 6697728.

The previous prime is 23478317. The next prime is 23478337. The reversal of 23478336 is 63387432.

It is a super-2 number, since 2×23478336² = 1102464522657792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23478336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35965 + ... + 36611.

Almost surely, 2^23478336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23478336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39831264).

23478336 is an abundant number, since it is smaller than the sum of its proper divisors (56184192).

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

23478336 is an equidigital number, since it uses as much as digits as its factorization.

23478336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 659 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 23478336 is about 4845.4448712167. Note that the first 3 decimals coincide. The cubic root of 23478336 is about 286.3446706054.

The spelling of 23478336 in words is "twenty-three million, four hundred seventy-eight thousand, three hundred thirty-six".