20724334 has 8 divisors (see below), whose sum is σ = 32438160. Its totient is φ = 9911616.

The previous prime is 20724287. The next prime is 20724349. The reversal of 20724334 is 43342702.

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

It is a junction number, because it is equal to n+sod(n) for n = 20724299 and 20724308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225219 + ... + 225310.

It is an arithmetic number, because the mean of its divisors is an integer number (4054770).

Almost surely, 2^20724334 is an apocalyptic number.

20724334 is a deficient number, since it is larger than the sum of its proper divisors (11713826).

20724334 is a wasteful number, since it uses less digits than its factorization.

20724334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450554.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 20724334 is about 4552.3987083734. The cubic root of 20724334 is about 274.6798875744.

The spelling of 20724334 in words is "twenty million, seven hundred twenty-four thousand, three hundred thirty-four".