20346028988 has 24 divisors (see below), whose sum is σ = 37163922432. Its totient is φ = 9728010864.

The previous prime is 20346028987. The next prime is 20346029107. The reversal of 20346028988 is 88982064302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346028981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325181 + ... + 382667.

It is an arithmetic number, because the mean of its divisors is an integer number (1548496768).

Almost surely, 2^20346028988 is an apocalyptic number.

It is an amenable number.

20346028988 is a deficient number, since it is larger than the sum of its proper divisors (16817893444).

20346028988 is a wasteful number, since it uses less digits than its factorization.

20346028988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61361 (or 61359 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 20346028988 in words is "twenty billion, three hundred forty-six million, twenty-eight thousand, nine hundred eighty-eight".