23128330 has 32 divisors (see below), whose sum is σ = 45283536. Its totient is φ = 8469504.

The previous prime is 23128327. The next prime is 23128337. The reversal of 23128330 is 3382132.

23128330 = T₂₉₂ + T₂₉₃ + ... + T₅₄₆.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 20820969 + 2307361 = 4563^2 + 1519^2 .

It is not an unprimeable number, because it can be changed into a prime (23128337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4452 + ... + 8128.

Almost surely, 2^23128330 is an apocalyptic number.

23128330 is a deficient number, since it is larger than the sum of its proper divisors (22155206).

23128330 is a wasteful number, since it uses less digits than its factorization.

23128330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23128330 is about 4809.1922398673. The cubic root of 23128330 is about 284.9146353550.

It can be divided in two parts, 231 and 28330, that added together give a 4-th power (28561 = 13⁴).

The spelling of 23128330 in words is "twenty-three million, one hundred twenty-eight thousand, three hundred thirty".