20830812830 has 32 divisors (see below), whose sum is σ = 40024834560. Its totient is φ = 7782596640.

The previous prime is 20830812809. The next prime is 20830812851. The reversal of 20830812830 is 3821803802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20830812809) and next prime (20830812851).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758594 + ... + 785573.

It is an arithmetic number, because the mean of its divisors is an integer number (1250776080).

Almost surely, 2^20830812830 is an apocalyptic number.

20830812830 is a deficient number, since it is larger than the sum of its proper divisors (19194021730).

20830812830 is a wasteful number, since it uses less digits than its factorization.

20830812830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544264.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 20830812830 in words is "twenty billion, eight hundred thirty million, eight hundred twelve thousand, eight hundred thirty".