20123433 has 48 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 11512800.

The previous prime is 20123431. The next prime is 20123437. The reversal of 20123433 is 33432102.

It is not a de Polignac number, because 20123433 - 2¹ = 20123431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242410 + ... + 242492.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^20123433 is an apocalyptic number.

It is an amenable number.

20123433 is a deficient number, since it is larger than the sum of its proper divisors (13422807).

20123433 is a wasteful number, since it uses less digits than its factorization.

20123433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20123433 is about 4485.9149568399. The cubic root of 20123433 is about 271.9990313186. Note that the first 3 decimals are identical.

Adding to 20123433 its reverse (33432102), we get a palindrome (53555535).

It can be divided in two parts, 2012 and 3433, that added together give a palindrome (5445).

The spelling of 20123433 in words is "twenty million, one hundred twenty-three thousand, four hundred thirty-three".