20232240 has 80 divisors (see below), whose sum is σ = 71685888. Its totient is φ = 4624128.

The previous prime is 20232239. The next prime is 20232257. The reversal of 20232240 is 4223202.

It is a tau number, because it is divible by the number of its divisors (80).

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, 4342 + ... + 7701.

Almost surely, 2^20232240 is an apocalyptic number.

20232240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20232240 is an abundant number, since it is smaller than the sum of its proper divisors (51453648).

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

20232240 is a wasteful number, since it uses less digits than its factorization.

20232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12066 (or 12060 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20232240 is about 4498.0262338052. The cubic root of 20232240 is about 272.4883815151.

Adding to 20232240 its reverse (4223202), we get a palindrome (24455442).

The spelling of 20232240 in words is "twenty million, two hundred thirty-two thousand, two hundred forty".