20219573424 has 240 divisors, whose sum is σ = 59720177664. Its totient is φ = 5867980800.

The previous prime is 20219573389. The next prime is 20219573443. The reversal of 20219573424 is 42437591202.

It is a super-2 number, since 2×20219573424² (a number of 21 digits) contains 22 as substring.

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, 13380829 + ... + 13382339.

Almost surely, 2^20219573424 is an apocalyptic number.

20219573424 is a gapful number since it is divisible by the number (24) 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 20219573424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29860088832).

20219573424 is an abundant number, since it is smaller than the sum of its proper divisors (39500604240).

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

20219573424 is a wasteful number, since it uses less digits than its factorization.

20219573424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20219573424 in words is "twenty billion, two hundred nineteen million, five hundred seventy-three thousand, four hundred twenty-four".