20263234320 has 640 divisors, whose sum is σ = 87217274880. Its totient is φ = 4216872960.

The previous prime is 20263234249. The next prime is 20263234333. The reversal of 20263234320 is 2343236202.

20263234320 is a `hidden beast` number, since 2 + 0 + 2 + 632 + 3 + 4 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7966969 + ... + 7969511.

It is an arithmetic number, because the mean of its divisors is an integer number (136276992).

Almost surely, 2^20263234320 is an apocalyptic number.

20263234320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20263234320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43608637440).

20263234320 is an abundant number, since it is smaller than the sum of its proper divisors (66954040560).

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

20263234320 is a wasteful number, since it uses less digits than its factorization.

20263234320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 2608 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The spelling of 20263234320 in words is "twenty billion, two hundred sixty-three million, two hundred thirty-four thousand, three hundred twenty".