20218673232 has 60 divisors (see below), whose sum is σ = 56596288320. Its totient is φ = 6738118464.

The previous prime is 20218673219. The next prime is 20218673249. The reversal of 20218673232 is 23237681202.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 824119 + ... + 848297.

It is an arithmetic number, because the mean of its divisors is an integer number (943271472).

Almost surely, 2^20218673232 is an apocalyptic number.

It is an amenable number.

20218673232 is an abundant number, since it is smaller than the sum of its proper divisors (36377615088).

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

20218673232 is a wasteful number, since it uses less digits than its factorization.

20218673232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000 (or 29991 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20218673232 in words is "twenty billion, two hundred eighteen million, six hundred seventy-three thousand, two hundred thirty-two".