20733898 has 32 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 9588096.

The previous prime is 20733857. The next prime is 20733901. The reversal of 20733898 is 89833702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20733898.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249765 + ... + 249847.

It is an arithmetic number, because the mean of its divisors is an integer number (1048950).

Almost surely, 2^20733898 is an apocalyptic number.

20733898 is a deficient number, since it is larger than the sum of its proper divisors (12832502).

20733898 is a wasteful number, since it uses less digits than its factorization.

20733898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 20733898 is about 4553.4490224444. The cubic root of 20733898 is about 274.7221347612.

The spelling of 20733898 in words is "twenty million, seven hundred thirty-three thousand, eight hundred ninety-eight".