20945233 has 8 divisors (see below), whose sum is σ = 21312000. Its totient is φ = 20580768.

The previous prime is 20945231. The next prime is 20945261. The reversal of 20945233 is 33254902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20945233 - 2¹ = 20945231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20945231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34668 + ... + 35266.

It is an arithmetic number, because the mean of its divisors is an integer number (2664000).

Almost surely, 2^20945233 is an apocalyptic number.

It is an amenable number.

20945233 is a deficient number, since it is larger than the sum of its proper divisors (366767).

20945233 is an equidigital number, since it uses as much as digits as its factorization.

20945233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20945233 is about 4576.5962242697. The cubic root of 20945233 is about 275.6523707442.

The spelling of 20945233 in words is "twenty million, nine hundred forty-five thousand, two hundred thirty-three".