20738398 has 12 divisors (see below), whose sum is σ = 31405248. Its totient is φ = 10270640.

The previous prime is 20738381. The next prime is 20738407. The reversal of 20738398 is 89383702.

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 20738398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88890 + ... + 89122.

It is an arithmetic number, because the mean of its divisors is an integer number (2617104).

Almost surely, 2^20738398 is an apocalyptic number.

20738398 is a deficient number, since it is larger than the sum of its proper divisors (10666850).

20738398 is an equidigital number, since it uses as much as digits as its factorization.

20738398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 426 counting only the distinct ones).

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

The square root of 20738398 is about 4553.9431265663. The cubic root of 20738398 is about 274.7420081779.

The spelling of 20738398 in words is "twenty million, seven hundred thirty-eight thousand, three hundred ninety-eight".