20298038 has 4 divisors (see below), whose sum is σ = 30447060. Its totient is φ = 10149018.

The previous prime is 20298013. The next prime is 20298041. The reversal of 20298038 is 83089202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20297995 and 20298013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5074508 + ... + 5074511.

It is an arithmetic number, because the mean of its divisors is an integer number (7611765).

Almost surely, 2^20298038 is an apocalyptic number.

20298038 is a deficient number, since it is larger than the sum of its proper divisors (10149022).

20298038 is a wasteful number, since it uses less digits than its factorization.

20298038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149021.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 20298038 is about 4505.3343938047. The cubic root of 20298038 is about 272.7834516525.

Subtracting from 20298038 its sum of digits (32), we obtain a triangular number (20298006 = T₆₃₇₁).

The spelling of 20298038 in words is "twenty million, two hundred ninety-eight thousand, thirty-eight".