233440220 has 24 divisors (see below), whose sum is σ = 527934624. Its totient is φ = 86193216.

The previous prime is 233440219. The next prime is 233440231. The reversal of 233440220 is 22044332.

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 = 233440192 and 233440201.

It is a congruent number.

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, 448664 + ... + 449183.

It is an arithmetic number, because the mean of its divisors is an integer number (21997276).

Almost surely, 2^233440220 is an apocalyptic number.

233440220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233440220 is an abundant number, since it is smaller than the sum of its proper divisors (294494404).

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

233440220 is a wasteful number, since it uses less digits than its factorization.

233440220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897869 (or 897867 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 233440220 is about 15278.7506033707. The cubic root of 233440220 is about 615.7322408280.

Adding to 233440220 its reverse (22044332), we get a palindrome (255484552).

The spelling of 233440220 in words is "two hundred thirty-three million, four hundred forty thousand, two hundred twenty".