23103240 has 64 divisors (see below), whose sum is σ = 72964800. Its totient is φ = 5836032.

The previous prime is 23103233. The next prime is 23103263. The reversal of 23103240 is 4230132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2787 + ... + 7346.

It is an arithmetic number, because the mean of its divisors is an integer number (1140075).

Almost surely, 2^23103240 is an apocalyptic number.

23103240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23103240 is an abundant number, since it is smaller than the sum of its proper divisors (49861560).

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

23103240 is a wasteful number, since it uses less digits than its factorization.

23103240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10166 (or 10162 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23103240 is about 4806.5829858643. The cubic root of 23103240 is about 284.8115713537.

Adding to 23103240 its reverse (4230132), we get a palindrome (27333372).

The spelling of 23103240 in words is "twenty-three million, one hundred three thousand, two hundred forty".