20387405024 has 48 divisors (see below), whose sum is σ = 45899548128. Its totient is φ = 8732147712.

The previous prime is 20387404997. The next prime is 20387405029. The reversal of 20387405024 is 42050478302.

It is a super-2 number, since 2×20387405024² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387405029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353312 + ... + 406944.

It is an arithmetic number, because the mean of its divisors is an integer number (956240586).

Almost surely, 2^20387405024 is an apocalyptic number.

It is an amenable number.

20387405024 is an abundant number, since it is smaller than the sum of its proper divisors (25512143104).

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

20387405024 is a wasteful number, since it uses less digits than its factorization.

20387405024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55347 (or 55339 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 20387405024 in words is "twenty billion, three hundred eighty-seven million, four hundred five thousand, twenty-four".