20793998 has 8 divisors (see below), whose sum is σ = 31278960. Its totient is φ = 10367680.

The previous prime is 20793989. The next prime is 20794003. The reversal of 20793998 is 89939702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13763 + ... + 15198.

It is an arithmetic number, because the mean of its divisors is an integer number (3909870).

Almost surely, 2^20793998 is an apocalyptic number.

20793998 is a deficient number, since it is larger than the sum of its proper divisors (10484962).

20793998 is a wasteful number, since it uses less digits than its factorization.

20793998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29322.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 20793998 is about 4560.0436401421. The cubic root of 20793998 is about 274.9873184235.

The spelling of 20793998 in words is "twenty million, seven hundred ninety-three thousand, nine hundred ninety-eight".