23470040 has 64 divisors (see below), whose sum is σ = 59058720. Its totient is φ = 8320000.

The previous prime is 23470037. The next prime is 23470049. The reversal of 23470040 is 4007432.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23469994 and 23470021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23470049) 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, 17390 + ... + 18690.

Almost surely, 2^23470040 is an apocalyptic number.

23470040 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 23470040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29529360).

23470040 is an abundant number, since it is smaller than the sum of its proper divisors (35588680).

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

23470040 is a wasteful number, since it uses less digits than its factorization.

23470040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 23470040 is about 4844.5887338349. The cubic root of 23470040 is about 286.3109402872.

Adding to 23470040 its reverse (4007432), we get a palindrome (27477472).

The spelling of 23470040 in words is "twenty-three million, four hundred seventy thousand, forty".