233666972 has 72 divisors (see below), whose sum is σ = 544031712. Its totient is φ = 85662720.

The previous prime is 233666971. The next prime is 233666999. The reversal of 233666972 is 279666332.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233666971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55568 + ... + 59624.

It is an arithmetic number, because the mean of its divisors is an integer number (7555996).

Almost surely, 2^233666972 is an apocalyptic number.

233666972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 233666972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272015856).

233666972 is an abundant number, since it is smaller than the sum of its proper divisors (310364740).

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

233666972 is a wasteful number, since it uses less digits than its factorization.

233666972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107 (or 4094 counting only the distinct ones).

The product of its digits is 489888, while the sum is 44.

The square root of 233666972 is about 15286.1693043090. The cubic root of 233666972 is about 615.9315400109.

The spelling of 233666972 in words is "two hundred thirty-three million, six hundred sixty-six thousand, nine hundred seventy-two".