20727146 has 8 divisors (see below), whose sum is σ = 33917184. Its totient is φ = 9421420.

The previous prime is 20727137. The next prime is 20727167. The reversal of 20727146 is 64172702.

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

It is a super-2 number, since 2×20727146² = 859229162610632, which contains 22 as substring.

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, 471050 + ... + 471093.

It is an arithmetic number, because the mean of its divisors is an integer number (4239648).

Almost surely, 2^20727146 is an apocalyptic number.

20727146 is a deficient number, since it is larger than the sum of its proper divisors (13190038).

20727146 is a wasteful number, since it uses less digits than its factorization.

20727146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942156.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 20727146 is about 4552.7075460653. The cubic root of 20727146 is about 274.6923104088.

Adding to 20727146 its reverse (64172702), we get a palindrome (84899848).

The spelling of 20727146 in words is "twenty million, seven hundred twenty-seven thousand, one hundred forty-six".