30814020820 has 96 divisors (see below), whose sum is σ = 75291431040. Its totient is φ = 10468823040.

The previous prime is 30814020781. The next prime is 30814020877. The reversal of 30814020820 is 2802041803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482311 + ... + 542449.

It is an arithmetic number, because the mean of its divisors is an integer number (784285740).

Almost surely, 2^30814020820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30814020820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37645715520).

30814020820 is an abundant number, since it is smaller than the sum of its proper divisors (44477410220).

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

30814020820 is a wasteful number, since it uses less digits than its factorization.

30814020820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60313 (or 60311 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 30814020820 in words is "thirty billion, eight hundred fourteen million, twenty thousand, eight hundred twenty".