20562998 has 4 divisors (see below), whose sum is σ = 30844500. Its totient is φ = 10281498.

The previous prime is 20562977. The next prime is 20563007. The reversal of 20562998 is 89926502.

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

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, 5140748 + ... + 5140751.

It is an arithmetic number, because the mean of its divisors is an integer number (7711125).

Almost surely, 2^20562998 is an apocalyptic number.

20562998 is a deficient number, since it is larger than the sum of its proper divisors (10281502).

20562998 is a wasteful number, since it uses less digits than its factorization.

20562998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10281501.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 20562998 is about 4534.6441977293. The cubic root of 20562998 is about 273.9652485807.

The spelling of 20562998 in words is "twenty million, five hundred sixty-two thousand, nine hundred ninety-eight".