20723433 has 8 divisors (see below), whose sum is σ = 29085600. Its totient is φ = 13088448.

The previous prime is 20723431. The next prime is 20723447. The reversal of 20723433 is 33432702.

It is a happy number.

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

It is not a de Polignac number, because 20723433 - 2¹ = 20723431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20723431) 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, 181728 + ... + 181841.

It is an arithmetic number, because the mean of its divisors is an integer number (3635700).

Almost surely, 2^20723433 is an apocalyptic number.

It is an amenable number.

20723433 is a deficient number, since it is larger than the sum of its proper divisors (8362167).

20723433 is a wasteful number, since it uses less digits than its factorization.

20723433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363591.

The product of its (nonzero) digits is 3024, while the sum is 24.

The square root of 20723433 is about 4552.2997484788. The cubic root of 20723433 is about 274.6759069050.

The spelling of 20723433 in words is "twenty million, seven hundred twenty-three thousand, four hundred thirty-three".