23720330 has 16 divisors (see below), whose sum is σ = 43851240. Its totient is φ = 9231552.

The previous prime is 23720299. The next prime is 23720371. The reversal of 23720330 is 3302732.

It can be written as a sum of positive squares in 4 ways, for example, as 23396569 + 323761 = 4837^2 + 569^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31685 + ... + 32424.

Almost surely, 2^23720330 is an apocalyptic number.

23720330 is a deficient number, since it is larger than the sum of its proper divisors (20130910).

23720330 is a wasteful number, since it uses less digits than its factorization.

23720330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64153.

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 23720330 is about 4870.3521433260. The cubic root of 23720330 is about 287.3251059792.

The spelling of 23720330 in words is "twenty-three million, seven hundred twenty thousand, three hundred thirty".