20858682428 has 24 divisors (see below), whose sum is σ = 38115735840. Its totient is φ = 9969090560.

The previous prime is 20858682409. The next prime is 20858682433. The reversal of 20858682428 is 82428685802.

It is a self number, because there is not a number n which added to its sum of digits gives 20858682428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59708 + ... + 212796.

It is an arithmetic number, because the mean of its divisors is an integer number (1588155660).

Almost surely, 2^20858682428 is an apocalyptic number.

It is an amenable number.

20858682428 is a deficient number, since it is larger than the sum of its proper divisors (17257053412).

20858682428 is a wasteful number, since it uses less digits than its factorization.

20858682428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154597 (or 154595 counting only the distinct ones).

The product of its (nonzero) digits is 3932160, while the sum is 53.

The spelling of 20858682428 in words is "twenty billion, eight hundred fifty-eight million, six hundred eighty-two thousand, four hundred twenty-eight".