20702927930 has 32 divisors (see below), whose sum is σ = 39486652416. Its totient is φ = 7788254464.

The previous prime is 20702927911. The next prime is 20702927939. The reversal of 20702927930 is 3972920702.

It is a super-2 number, since 2×20702927930² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20702927939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187847 + ... + 276933.

It is an arithmetic number, because the mean of its divisors is an integer number (1233957888).

Almost surely, 2^20702927930 is an apocalyptic number.

20702927930 is a deficient number, since it is larger than the sum of its proper divisors (18783724486).

20702927930 is a wasteful number, since it uses less digits than its factorization.

20702927930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90478.

The product of its (nonzero) digits is 95256, while the sum is 41.

The spelling of 20702927930 in words is "twenty billion, seven hundred two million, nine hundred twenty-seven thousand, nine hundred thirty".