20340146 has 16 divisors (see below), whose sum is σ = 32508000. Its totient is φ = 9517248.

The previous prime is 20340101. The next prime is 20340167. The reversal of 20340146 is 64104302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (2031750).

Almost surely, 2^20340146 is an apocalyptic number.

20340146 is a deficient number, since it is larger than the sum of its proper divisors (12167854).

20340146 is a wasteful number, since it uses less digits than its factorization.

20340146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20340146 is about 4510.0050997754. The cubic root of 20340146 is about 272.9719498702.

Adding to 20340146 its reverse (64104302), we get a palindrome (84444448).

The spelling of 20340146 in words is "twenty million, three hundred forty thousand, one hundred forty-six".