20697834 has 16 divisors (see below), whose sum is σ = 41594400. Its totient is φ = 6866160.

The previous prime is 20697827. The next prime is 20697847. The reversal of 20697834 is 43879602.

It is a junction number, because it is equal to n+sod(n) for n = 20697792 and 20697801.

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, 6909 + ... + 9440.

It is an arithmetic number, because the mean of its divisors is an integer number (2599650).

Almost surely, 2^20697834 is an apocalyptic number.

20697834 is an abundant number, since it is smaller than the sum of its proper divisors (20896566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20697834 is a wasteful number, since it uses less digits than its factorization.

20697834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16565.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 20697834 is about 4549.4872238528. The cubic root of 20697834 is about 274.5627608227.

The spelling of 20697834 in words is "twenty million, six hundred ninety-seven thousand, eight hundred thirty-four".