20398148 has 12 divisors (see below), whose sum is σ = 37248960. Its totient is φ = 9755592.

The previous prime is 20398139. The next prime is 20398193. The reversal of 20398148 is 84189302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110768 + ... + 110951.

It is an arithmetic number, because the mean of its divisors is an integer number (3104080).

Almost surely, 2^20398148 is an apocalyptic number.

It is an amenable number.

20398148 is a deficient number, since it is larger than the sum of its proper divisors (16850812).

20398148 is a wasteful number, since it uses less digits than its factorization.

20398148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221746 (or 221744 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20398148 is about 4516.4308917551. The cubic root of 20398148 is about 273.2311727408.

The spelling of 20398148 in words is "twenty million, three hundred ninety-eight thousand, one hundred forty-eight".