20198704 has 10 divisors (see below), whose sum is σ = 39135020. Its totient is φ = 10099344.

The previous prime is 20198657. The next prime is 20198713. The reversal of 20198704 is 40789102.

It is a super-4 number, since 4×20198704⁴ (a number of 30 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631194 + ... + 631225.

It is an arithmetic number, because the mean of its divisors is an integer number (3913502).

Almost surely, 2^20198704 is an apocalyptic number.

It is an amenable number.

20198704 is a deficient number, since it is larger than the sum of its proper divisors (18936316).

20198704 is a wasteful number, since it uses less digits than its factorization.

20198704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262427 (or 1262421 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20198704 is about 4494.2968304285. The cubic root of 20198704 is about 272.3377436550.

It can be divided in two parts, 20198 and 704, that added together give a palindrome (20902).

The spelling of 20198704 in words is "twenty million, one hundred ninety-eight thousand, seven hundred four".