20492729502 has 32 divisors (see below), whose sum is σ = 46958548992. Its totient is φ = 5840312544.

The previous prime is 20492729489. The next prime is 20492729507. The reversal of 20492729502 is 20592729402.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492729507) 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 15 ways as a sum of consecutive naturals, for example, 597838 + ... + 631185.

It is an arithmetic number, because the mean of its divisors is an integer number (1467454656).

Almost surely, 2^20492729502 is an apocalyptic number.

20492729502 is an abundant number, since it is smaller than the sum of its proper divisors (26465819490).

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

20492729502 is a wasteful number, since it uses less digits than its factorization.

20492729502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229432.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 20492729502 in words is "twenty billion, four hundred ninety-two million, seven hundred twenty-nine thousand, five hundred two".