20392784652 has 12 divisors (see below), whose sum is σ = 47583164216. Its totient is φ = 6797594880.

The previous prime is 20392784651. The next prime is 20392784677. The reversal of 20392784652 is 25648729302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20392784652² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20392784651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849699349 + ... + 849699372.

Almost surely, 2^20392784652 is an apocalyptic number.

It is an amenable number.

20392784652 is an abundant number, since it is smaller than the sum of its proper divisors (27190379564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20392784652 is a wasteful number, since it uses less digits than its factorization.

20392784652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699398728 (or 1699398726 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 20392784652 in words is "twenty billion, three hundred ninety-two million, seven hundred eighty-four thousand, six hundred fifty-two".