20893988284 has 24 divisors (see below), whose sum is σ = 39575026400. Its totient is φ = 9594915264.

The previous prime is 20893988281. The next prime is 20893988287. The reversal of 20893988284 is 48288939802.

It is an interprime number because it is at equal distance from previous prime (20893988281) and next prime (20893988287).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20893988281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999219 + ... + 1019914.

Almost surely, 2^20893988284 is an apocalyptic number.

It is an amenable number.

20893988284 is a deficient number, since it is larger than the sum of its proper divisors (18681038116).

20893988284 is a wasteful number, since it uses less digits than its factorization.

20893988284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019349 (or 2019347 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 61.

The spelling of 20893988284 in words is "twenty billion, eight hundred ninety-three million, nine hundred eighty-eight thousand, two hundred eighty-four".