20733386 has 4 divisors (see below), whose sum is σ = 31100082. Its totient is φ = 10366692.

The previous prime is 20733359. The next prime is 20733467. The reversal of 20733386 is 68333702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14205361 + 6528025 = 3769^2 + 2555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5183345 + ... + 5183348.

Almost surely, 2^20733386 is an apocalyptic number.

20733386 is a deficient number, since it is larger than the sum of its proper divisors (10366696).

20733386 is a wasteful number, since it uses less digits than its factorization.

20733386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366695.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 20733386 is about 4553.3928009782. The cubic root of 20733386 is about 274.7198734259.

The spelling of 20733386 in words is "twenty million, seven hundred thirty-three thousand, three hundred eighty-six".