23033140 has 24 divisors (see below), whose sum is σ = 52090920. Its totient is φ = 8504448.

The previous prime is 23033137. The next prime is 23033159. The reversal of 23033140 is 4133032.

It can be written as a sum of positive squares in 4 ways, for example, as 1909924 + 21123216 = 1382^2 + 4596^2 .

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, 44035 + ... + 44554.

It is an arithmetic number, because the mean of its divisors is an integer number (2170455).

Almost surely, 2^23033140 is an apocalyptic number.

23033140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23033140 is an abundant number, since it is smaller than the sum of its proper divisors (29057780).

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

23033140 is a wasteful number, since it uses less digits than its factorization.

23033140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88611 (or 88609 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 23033140 is about 4799.2853634682. The cubic root of 23033140 is about 284.5232204817.

Adding to 23033140 its reverse (4133032), we get a palindrome (27166172).

The spelling of 23033140 in words is "twenty-three million, thirty-three thousand, one hundred forty".