22378520724 has 192 divisors, whose sum is σ = 64595865600. Its totient is φ = 5884876800.

The previous prime is 22378520719. The next prime is 22378520771. The reversal of 22378520724 is 42702587322.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14446302 + ... + 14447850.

It is an arithmetic number, because the mean of its divisors is an integer number (336436800).

Almost surely, 2^22378520724 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 22378520724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32297932800).

22378520724 is an abundant number, since it is smaller than the sum of its proper divisors (42217344876).

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

22378520724 is a wasteful number, since it uses less digits than its factorization.

22378520724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 22378520724 in words is "twenty-two billion, three hundred seventy-eight million, five hundred twenty thousand, seven hundred twenty-four".