22287939520 has 224 divisors, whose sum is σ = 67080969216. Its totient is φ = 6851174400.

The previous prime is 22287939461. The next prime is 22287939547. The reversal of 22287939520 is 2593978222.

It is a tau number, because it is divible by the number of its divisors (224).

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, 1792525 + ... + 1804915.

Almost surely, 2^22287939520 is an apocalyptic number.

22287939520 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 22287939520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33540484608).

22287939520 is an abundant number, since it is smaller than the sum of its proper divisors (44793029696).

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

22287939520 is a wasteful number, since it uses less digits than its factorization.

22287939520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12499 (or 12489 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 22287939520 in words is "twenty-two billion, two hundred eighty-seven million, nine hundred thirty-nine thousand, five hundred twenty".