23603240 has 32 divisors (see below), whose sum is σ = 53861760. Its totient is φ = 9307200.

The previous prime is 23603231. The next prime is 23603257. The reversal of 23603240 is 4230632.

It is a super-2 number, since 2×23603240² = 1114225876995200, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316 + ... + 6995.

It is an arithmetic number, because the mean of its divisors is an integer number (1683180).

Almost surely, 2^23603240 is an apocalyptic number.

23603240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23603240 is an abundant number, since it is smaller than the sum of its proper divisors (30258520).

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

23603240 is a wasteful number, since it uses less digits than its factorization.

23603240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393 (or 8389 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 23603240 is about 4858.3165808745. The cubic root of 23603240 is about 286.8515543071.

Adding to 23603240 its reverse (4230632), we get a palindrome (27833872).

The spelling of 23603240 in words is "twenty-three million, six hundred three thousand, two hundred forty".