22834721520 has 240 divisors, whose sum is σ = 85250710272. Its totient is φ = 5439467520.

The previous prime is 22834721501. The next prime is 22834721537. The reversal of 22834721520 is 2512743822.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×22834721520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 250812 + ... + 329508.

Almost surely, 2^22834721520 is an apocalyptic number.

22834721520 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 22834721520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42625355136).

22834721520 is an abundant number, since it is smaller than the sum of its proper divisors (62415988752).

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

22834721520 is a wasteful number, since it uses less digits than its factorization.

22834721520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78760 (or 78751 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 22834721520 in words is "twenty-two billion, eight hundred thirty-four million, seven hundred twenty-one thousand, five hundred twenty".