20198630 has 16 divisors (see below), whose sum is σ = 36408960. Its totient is φ = 8068032.

The previous prime is 20198627. The next prime is 20198657. The reversal of 20198630 is 3689102.

It is a junction number, because it is equal to n+sod(n) for n = 20198593 and 20198602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12107 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (2275560).

Almost surely, 2^20198630 is an apocalyptic number.

20198630 is a deficient number, since it is larger than the sum of its proper divisors (16210330).

20198630 is a wasteful number, since it uses less digits than its factorization.

20198630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 20198630 is about 4494.2885977649. The cubic root of 20198630 is about 272.3374110756.

The spelling of 20198630 in words is "twenty million, one hundred ninety-eight thousand, six hundred thirty".