23155330 has 32 divisors (see below), whose sum is σ = 45759168.
Its totient is φ = 8366400.
The previous prime is 23155313. The next prime is 23155331. The reversal of 23155330 is 3355132.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (22).
It is not an unprimeable number, because it can be changed into a prime (23155331) 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, 19329 + ... + 20491.
It is an arithmetic number, because the mean of its divisors is an integer number (1429974).
Almost surely, 223155330 is an apocalyptic number.
23155330 is a deficient number, since it is larger than the sum of its proper divisors (22603838).
23155330 is a wasteful number, since it uses less digits than its factorization.
23155330 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1362.
The product of its (nonzero) digits is 1350, while the sum is 22.
The square root of 23155330 is about 4811.9985453032.
The cubic root of 23155330 is about 285.0254619706.
The spelling of 23155330 in words is "twenty-three million, one hundred fifty-five thousand, three hundred thirty".