23720733 has 18 divisors (see below), whose sum is σ = 35067006. Its totient is φ = 15445872.

The previous prime is 23720713. The next prime is 23720761. The reversal of 23720733 is 33702732.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21930489 + 1790244 = 4683^2 + 1338^2 .

It is not a de Polignac number, because 23720733 - 2¹³ = 23712541 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23720697 and 23720706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23720713) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 106260 + ... + 106482.

It is an arithmetic number, because the mean of its divisors is an integer number (1948167).

Almost surely, 2^23720733 is an apocalyptic number.

It is an amenable number.

23720733 is a deficient number, since it is larger than the sum of its proper divisors (11346273).

23720733 is an equidigital number, since it uses as much as digits as its factorization.

23720733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 27.

The square root of 23720733 is about 4870.3935159287. The cubic root of 23720733 is about 287.3267331539.

The spelling of 23720733 in words is "twenty-three million, seven hundred twenty thousand, seven hundred thirty-three".