20898934 has 16 divisors (see below), whose sum is σ = 35890848. Its totient is φ = 8940672.

The previous prime is 20898931. The next prime is 20898949. The reversal of 20898934 is 43989802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10222 + ... + 12094.

It is an arithmetic number, because the mean of its divisors is an integer number (2243178).

Almost surely, 2^20898934 is an apocalyptic number.

20898934 is a deficient number, since it is larger than the sum of its proper divisors (14991914).

20898934 is a wasteful number, since it uses less digits than its factorization.

20898934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 20898934 is about 4571.5351907209. The cubic root of 20898934 is about 275.4491129692.

The spelling of 20898934 in words is "twenty million, eight hundred ninety-eight thousand, nine hundred thirty-four".