233454520220 has 24 divisors (see below), whose sum is σ = 495014249184. Its totient is φ = 92475187776.

The previous prime is 233454520183. The next prime is 233454520261. The reversal of 233454520220 is 22025454332.

It is a super-2 number, since 2×233454520220² (a number of 24 digits) contains 22 as substring.

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, 56661659 + ... + 56665778.

It is an arithmetic number, because the mean of its divisors is an integer number (20625593716).

Almost surely, 2^233454520220 is an apocalyptic number.

233454520220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233454520220 is an abundant number, since it is smaller than the sum of its proper divisors (261559728964).

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

233454520220 is a wasteful number, since it uses less digits than its factorization.

233454520220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113327549 (or 113327547 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 233454520220 its reverse (22025454332), we get a palindrome (255479974552).

The spelling of 233454520220 in words is "two hundred thirty-three billion, four hundred fifty-four million, five hundred twenty thousand, two hundred twenty".