20963798 has 4 divisors (see below), whose sum is σ = 31445700. Its totient is φ = 10481898.

The previous prime is 20963797. The next prime is 20963807. The reversal of 20963798 is 89736902.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20963797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5240948 + ... + 5240951.

It is an arithmetic number, because the mean of its divisors is an integer number (7861425).

Almost surely, 2^20963798 is an apocalyptic number.

20963798 is a deficient number, since it is larger than the sum of its proper divisors (10481902).

20963798 is a wasteful number, since it uses less digits than its factorization.

20963798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481901.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 20963798 is about 4578.6240291162. The cubic root of 20963798 is about 275.7337890321.

The spelling of 20963798 in words is "twenty million, nine hundred sixty-three thousand, seven hundred ninety-eight".