20942924830 has 8 divisors (see below), whose sum is σ = 37697264712. Its totient is φ = 8377169928.

The previous prime is 20942924771. The next prime is 20942924831. The reversal of 20942924830 is 3842924902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20942924830² (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 (20942924831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047146232 + ... + 1047146251.

It is an arithmetic number, because the mean of its divisors is an integer number (4712158089).

Almost surely, 2^20942924830 is an apocalyptic number.

20942924830 is a deficient number, since it is larger than the sum of its proper divisors (16754339882).

20942924830 is a wasteful number, since it uses less digits than its factorization.

20942924830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094292490.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 20942924830 in words is "twenty billion, nine hundred forty-two million, nine hundred twenty-four thousand, eight hundred thirty".