23470240 has 36 divisors (see below), whose sum is σ = 55593594. Its totient is φ = 9363584.

The previous prime is 23470231. The next prime is 23470241. The reversal of 23470240 is 4207432.

It can be written as a sum of positive squares in only one way, i.e., 21123216 + 2347024 = 4596^2 + 1532^2 .

It is not an unprimeable number, because it can be changed into a prime (23470241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61089 + ... + 61471.

Almost surely, 2^23470240 is an apocalyptic number.

23470240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23470240 is an abundant number, since it is smaller than the sum of its proper divisors (32123354).

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

23470240 is an frugal number, since it uses more digits than its factorization.

23470240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 23470240 is about 4844.6093753780. The cubic root of 23470240 is about 286.3117535513.

Adding to 23470240 its reverse (4207432), we get a palindrome (27677672).

The spelling of 23470240 in words is "twenty-three million, four hundred seventy thousand, two hundred forty".