20670139224 has 120 divisors (see below), whose sum is σ = 67347963540. Its totient is φ = 5905744992.

The previous prime is 20670139223. The next prime is 20670139229. The reversal of 20670139224 is 42293107602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670139223) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 293742 + ... + 357245.

Almost surely, 2^20670139224 is an apocalyptic number.

20670139224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20670139224 is an abundant number, since it is smaller than the sum of its proper divisors (46677824316).

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

20670139224 is a wasteful number, since it uses less digits than its factorization.

20670139224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651019 (or 650999 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 20670139224 in words is "twenty billion, six hundred seventy million, one hundred thirty-nine thousand, two hundred twenty-four".